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:
27,292,055 = 5 × 7 × 17 × 45,869
27,292,055 is a composite number.
Written with exponents:
59,400,054 = 2 × 3 × 3 × 3 × 3 × 7 × 7 × 7 × 1,069 = 2 × 34 × 73 × 1,069
59,400,054 is a composite number.
27,292,055/59,400,054 =
(27,292,055 ÷ 7) / (59,400,054 ÷ 7) =
3,898,865/8,485,722
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.
27,292,055/59,400,054 =
(5 × 7 × 17 × 45,869)/(2 × 34 × 73 × 1,069) =
((5 × 7 × 17 × 45,869) ÷ 7) / ((2 × 34 × 73 × 1,069) ÷ 7) =
(5 × 17 × 45,869)/(2 × 34 × 72 × 1,069) =
3,898,865/8,485,722
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
3,898,865/8,485,722 =
3,898,865 ÷ 8,485,722 =
0.459461787695 ≈
0.46