Finding the Fourth Proportional to 1,396,062,171.99, 1,926,565,327.40 and 769,541,062.68
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Solution
The fourth proportional to 1,396,062,171.99, 1,926,565,327.40 and 769,541,062.68 is: 1,061,966,407.45
Step by Step Solution
- Step 1: Write the proportion equation
1,396,062,171.99 : 1,926,565,327.40 = 769,541,062.68 : x - Step 2: Convert to fraction form
1,396,062,171.99/1,926,565,327.40 = 769,541,062.68/x - Step 3: Cross multiply
1,396,062,171.99x = 1,926,565,327.40 × 769,541,062.68 - Step 4: Simplify right side
1,396,062,171.99x = 1,482,571,129,365,990,400 - Step 5: Solve for x
x = 1,482,571,129,365,990,400/1,396,062,171.99 - Step 6: Final answer
x = 1,061,966,407.45
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.