Analyze the fractions to be compared and ordered, by category:
positive proper fractions: 288/431, 282/439, 308/450, 307/435
Simplify the operation
Reduce (simplify) the fractions to their lowest terms equivalents:
- To reduce a fraction to the lowest terms equivalent: divide both the numerator and denominator by their greatest common factor, GCF.
The fraction: 288/431
288/431 is already reduced to the lowest terms.
The numerator and denominator have no common prime factors:
- 288 = 25 × 32
- 431 is a prime number.
- GCF (288; 431) = 1
The fraction: 282/439
282/439 is already reduced to the lowest terms.
The numerator and denominator have no common prime factors:
- 282 = 2 × 3 × 47
- 439 is a prime number.
- GCF (282; 439) = 1
The fraction: 308/450
- The prime factorizations of the numerator and denominator:
- 308 = 22 × 7 × 11
- 450 = 2 × 32 × 52
- Multiply all the common prime factors: if there are repeating prime factors we only take them once, and only the ones having the lowest exponent (the lowest powers).
- GCF (308; 450) = 2
308/450 = (308 ÷ 2)/(450 ÷ 2) = 154/225
The fraction can also be reduced without calculating GCF; factor the numerator and denominator and cross out all the common prime factors:
308/450 = (22 × 7 × 11)/(2 × 32 × 52) = ((22 × 7 × 11) ÷ 2)/((2 × 32 × 52) ÷ 2) = 154/225
The fraction: 307/435
307/435 is already reduced to the lowest terms.
The numerator and denominator have no common prime factors:
- 307 is a prime number.
- 435 = 3 × 5 × 29
- GCF (307; 435) = 1
Calculate the common numerator
The common numerator is nothing else than the least common multiple (LCM) of the numerators of the fractions.
To calculate the LCM, we need the prime factorization of the numerators:
288 = 25 × 32
282 = 2 × 3 × 47
154 = 2 × 7 × 11
307 is a prime number.
Multiply all the unique prime factors: if there are repeating prime factors we only take them once, and only the ones having the highest exponent (the highest powers).
LCM (288, 282, 154, 307) = 25 × 32 × 7 × 11 × 47 × 307 = 319,977,504
Calculate the expanding number of each fraction:
Divide the LCM by the numerator of each fraction.
288/431 ⟶ 319,977,504 ÷ 288 = (25 × 32 × 7 × 11 × 47 × 307) ÷ (25 × 32) = 1,111,033
282/439 ⟶ 319,977,504 ÷ 282 = (25 × 32 × 7 × 11 × 47 × 307) ÷ (2 × 3 × 47) = 1,134,672
154/225 ⟶ 319,977,504 ÷ 154 = (25 × 32 × 7 × 11 × 47 × 307) ÷ (2 × 7 × 11) = 2,077,776
307/435 ⟶ 319,977,504 ÷ 307 = (25 × 32 × 7 × 11 × 47 × 307) ÷ 307 = 1,042,272
Make the numerators of the fractions the same:
- Expand each fraction: multiply both its numerator and denominator by its corresponding expanding number, calculated above.
- This way all the fractions will have the same numerator:
288/431 = (1,111,033 × 288)/(1,111,033 × 431) = 319,977,504/478,855,223
282/439 = (1,134,672 × 282)/(1,134,672 × 439) = 319,977,504/498,121,008
154/225 = (2,077,776 × 154)/(2,077,776 × 225) = 319,977,504/467,499,600
307/435 = (1,042,272 × 307)/(1,042,272 × 435) = 319,977,504/453,388,320