Detailed calculations and explanations, below
A common ordinary fraction is made up of
two integer numbers and a fraction bar:
779,422,863,426/900,000,000,012
- The integer number above the bar is called numerator: 779,422,863,426
- The integer number below the bar is called denominator: 900,000,000,012
- 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 = 779,422,863,426 ÷ 900,000,000,012
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:
779,422,863,426 = 2 × 3 × 195,163 × 665,617
779,422,863,426 is a composite number.
Written with exponents:
900,000,000,012 = 2 × 2 × 3 × 75,000,000,001 = 22 × 3 × 75,000,000,001
900,000,000,012 is a composite number.
779,422,863,426/900,000,000,012 =
(779,422,863,426 ÷ 6) / (900,000,000,012 ÷ 6) =
129,903,810,571/150,000,000,002
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.
779,422,863,426/900,000,000,012 =
(2 × 3 × 195,163 × 665,617)/(22 × 3 × 75,000,000,001) =
((2 × 3 × 195,163 × 665,617) ÷ (2 × 3)) / ((22 × 3 × 75,000,000,001) ÷ (2 × 3)) =
(195,163 × 665,617)/(2 × 75,000,000,001) =
129,903,810,571/150,000,000,002
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
129,903,810,571/150,000,000,002 =
129,903,810,571 ÷ 150,000,000,002 =
0.866025403795 ≈
0.87