To reduce a fraction to the lowest terms equivalent: divide the numerator and denominator by their greatest common factor, GCF
To calculate the greatest common factor, GCF:
- 1. Factor the numerator and the denominator (into prime factors), build their prime factorizations.
- 2. Multiply all their common prime factors, taken by the lowest exponents.
1. Factor the numerator and the denominator:
To factor a number (into prime factors) - or, in other words, to break it down to prime factors - or, in other words, to build its prime factorization: find the prime numbers that multiply together to get that number.
The prime factorizations:
16,111,130 = 2 × 5 × 7 × 47 × 59 × 83
16,111,130 is a composite number.
Written with exponents:
49,999,995 = 3 × 3 × 5 × 239 × 4,649 = 32 × 5 × 239 × 4,649
49,999,995 is a composite number.
16,111,130/49,999,995 =
(16,111,130 ÷ 5) / (49,999,995 ÷ 5) =
3,222,226/9,999,999
Yet another method to reduce the fraction
To reduce a fraction without calculating the GCF: factor its numerator and denominator, then all the common prime factors are easily identified and crossed out.
16,111,130/49,999,995 =
(2 × 5 × 7 × 47 × 59 × 83)/(32 × 5 × 239 × 4,649) =
((2 × 5 × 7 × 47 × 59 × 83) ÷ 5) / ((32 × 5 × 239 × 4,649) ÷ 5) =
(2 × 7 × 47 × 59 × 83)/(32 × 239 × 4,649) =
3,222,226/9,999,999
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
3,222,226/9,999,999 =
3,222,226 ÷ 9,999,999 =
0.322222632222 ≈
0.32