Detailed calculations and explanations, below
A common ordinary fraction is made up of
two integer numbers and a fraction bar:
779,422,863,478/900,000,000,088
- The integer number above the bar is called numerator: 779,422,863,478
- The integer number below the bar is called denominator: 900,000,000,088
- 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 = 779,422,863,478 ÷ 900,000,000,088
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:
779,422,863,478 = 2 × 7 × 17 × 23 × 142,386,347
779,422,863,478 is a composite number.
Written with exponents:
900,000,000,088 = 2 × 2 × 2 × 7 × 21,569 × 745,117 = 23 × 7 × 21,569 × 745,117
900,000,000,088 is a composite number.
779,422,863,478/900,000,000,088 =
(779,422,863,478 ÷ 14) / (900,000,000,088 ÷ 14) =
55,673,061,677/64,285,714,292
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.
779,422,863,478/900,000,000,088 =
(2 × 7 × 17 × 23 × 142,386,347)/(23 × 7 × 21,569 × 745,117) =
((2 × 7 × 17 × 23 × 142,386,347) ÷ (2 × 7)) / ((23 × 7 × 21,569 × 745,117) ÷ (2 × 7)) =
(17 × 23 × 142,386,347)/(22 × 21,569 × 745,117) =
55,673,061,677/64,285,714,292
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
55,673,061,677/64,285,714,292 =
55,673,061,677 ÷ 64,285,714,292 =
0.86602540378 ≈
0.87