Detailed calculations and explanations, below
A common ordinary fraction is made up of
two integer numbers and a fraction bar:
779,422,863,384/900,000,000,010
- The integer number above the bar is called numerator: 779,422,863,384
- The integer number below the bar is called denominator: 900,000,000,010
- 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 = 779,422,863,384 ÷ 900,000,000,010
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:
779,422,863,384 = 2 × 2 × 2 × 3 × 3 × 11 × 984,119,777 = 23 × 32 × 11 × 984,119,777
779,422,863,384 is a composite number.
900,000,000,010 = 2 × 5 × 113 × 796,460,177
900,000,000,010 is a composite number.
779,422,863,384/900,000,000,010 =
(779,422,863,384 ÷ 2) / (900,000,000,010 ÷ 2) =
389,711,431,692/450,000,000,005
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.
779,422,863,384/900,000,000,010 =
(23 × 32 × 11 × 984,119,777)/(2 × 5 × 113 × 796,460,177) =
((23 × 32 × 11 × 984,119,777) ÷ 2) / ((2 × 5 × 113 × 796,460,177) ÷ 2) =
(22 × 32 × 11 × 984,119,777)/(5 × 113 × 796,460,177) =
389,711,431,692/450,000,000,005
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
389,711,431,692/450,000,000,005 =
389,711,431,692 ÷ 450,000,000,005 =
0.86602540375 ≈
0.87