Detailed calculations and explanations, below
A common ordinary fraction is made up of
two integer numbers and a fraction bar:
779,422,863,400/899,999,999,984
- The integer number above the bar is called numerator: 779,422,863,400
- The integer number below the bar is called denominator: 899,999,999,984
- The fraction bar means that the numerator is divided by the denominator.
- To get the fraction's value divide the numerator by the denominator:
The value = 779,422,863,400 ÷ 899,999,999,984
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:
779,422,863,400 = 2 × 2 × 2 × 5 × 5 × 3,897,114,317 = 23 × 52 × 3,897,114,317
779,422,863,400 is a composite number.
Written with exponents:
899,999,999,984 = 2 × 2 × 2 × 2 × 31 × 1,814,516,129 = 24 × 31 × 1,814,516,129
899,999,999,984 is a composite number.
779,422,863,400/899,999,999,984 =
(779,422,863,400 ÷ 8) / (899,999,999,984 ÷ 8) =
97,427,857,925/112,499,999,998
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.
779,422,863,400/899,999,999,984 =
(23 × 52 × 3,897,114,317)/(24 × 31 × 1,814,516,129) =
((23 × 52 × 3,897,114,317) ÷ 23) / ((24 × 31 × 1,814,516,129) ÷ 23) =
(52 × 3,897,114,317)/(2 × 31 × 1,814,516,129) =
97,427,857,925/112,499,999,998
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
97,427,857,925/112,499,999,998 =
97,427,857,925 ÷ 112,499,999,998 =
0.866025403793 ≈
0.87