Finding the Fourth Proportional to 788,531,776.18, 1,088,508,909.35 and 491,320,861.68
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Solution
The fourth proportional to 788,531,776.18, 1,088,508,909.35 and 491,320,861.68 is: 678,231,558.25
Step by Step Solution
- Step 1: Write the proportion equation
788,531,776.18 : 1,088,508,909.35 = 491,320,861.68 : x - Step 2: Convert to fraction form
788,531,776.18/1,088,508,909.35 = 491,320,861.68/x - Step 3: Cross multiply
788,531,776.18x = 1,088,508,909.35 × 491,320,861.68 - Step 4: Simplify right side
788,531,776.18x = 534,807,135,290,757,760 - Step 5: Solve for x
x = 534,807,135,290,757,760/788,531,776.18 - Step 6: Final answer
x = 678,231,558.25
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1.5x scale
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.