Detailed calculations and explanations, below
A common ordinary fraction is made up of
two integer numbers and a fraction bar:
779,422,863,432/900,000,000,102
- The integer number above the bar is called numerator: 779,422,863,432
- The integer number below the bar is called denominator: 900,000,000,102
- 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 = 779,422,863,432 ÷ 900,000,000,102
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:
779,422,863,432 = 2 × 2 × 2 × 3 × 23 × 113 × 233 × 53,629 = 23 × 3 × 23 × 113 × 233 × 53,629
779,422,863,432 is a composite number.
900,000,000,102 = 2 × 3 × 7 × 19 × 1,127,819,549
900,000,000,102 is a composite number.
779,422,863,432/900,000,000,102 =
(779,422,863,432 ÷ 6) / (900,000,000,102 ÷ 6) =
129,903,810,572/150,000,000,017
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.
779,422,863,432/900,000,000,102 =
(23 × 3 × 23 × 113 × 233 × 53,629)/(2 × 3 × 7 × 19 × 1,127,819,549) =
((23 × 3 × 23 × 113 × 233 × 53,629) ÷ (2 × 3)) / ((2 × 3 × 7 × 19 × 1,127,819,549) ÷ (2 × 3)) =
(22 × 23 × 113 × 233 × 53,629)/(7 × 19 × 1,127,819,549) =
129,903,810,572/150,000,000,017
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
129,903,810,572/150,000,000,017 =
129,903,810,572 ÷ 150,000,000,017 =
0.866025403715 ≈
0.87