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:
Written with exponents:
3,846,141 = 3 × 3 × 13 × 71 × 463 = 32 × 13 × 71 × 463
3,846,141 is a composite number.
Written with exponents:
49,999,976 = 2 × 2 × 2 × 13 × 23 × 20,903 = 23 × 13 × 23 × 20,903
49,999,976 is a composite number.
3,846,141/49,999,976 =
(3,846,141 ÷ 13) / (49,999,976 ÷ 13) =
295,857/3,846,152
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.
3,846,141/49,999,976 =
(32 × 13 × 71 × 463)/(23 × 13 × 23 × 20,903) =
((32 × 13 × 71 × 463) ÷ 13) / ((23 × 13 × 23 × 20,903) ÷ 13) =
(32 × 71 × 463)/(23 × 23 × 20,903) =
295,857/3,846,152
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
295,857/3,846,152 =
295,857 ÷ 3,846,152 =
0.076922856923 ≈
0.08