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:
27,292,057 = 13 × 43 × 48,823
27,292,057 is a composite number.
59,400,071 = 43 × 1,381,397
59,400,071 is a composite number.
27,292,057/59,400,071 =
(27,292,057 ÷ 43) / (59,400,071 ÷ 43) =
634,699/1,381,397
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.
27,292,057/59,400,071 =
(13 × 43 × 48,823)/(43 × 1,381,397) =
((13 × 43 × 48,823) ÷ 43) / ((43 × 1,381,397) ÷ 43) =
(13 × 48,823)/1,381,397 =
634,699/1,381,397
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
634,699/1,381,397 =
634,699 ÷ 1,381,397 =
0.459461689869 ≈
0.46