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:
2,057,635 = 5 × 411,527
2,057,635 is a composite number.
499,999,965 = 3 × 5 × 33,333,331
499,999,965 is a composite number.
2,057,635/499,999,965 =
(2,057,635 ÷ 5) / (499,999,965 ÷ 5) =
411,527/99,999,993
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.
2,057,635/499,999,965 =
(5 × 411,527)/(3 × 5 × 33,333,331) =
((5 × 411,527) ÷ 5) / ((3 × 5 × 33,333,331) ÷ 5) =
411,527/(3 × 33,333,331) =
411,527/99,999,993
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
411,527/99,999,993 =
411,527 ÷ 99,999,993 =
0.004115270288 ≈
0