Finding the Fourth Proportional to 664,723.96, 917,385.42 and 396,451.96
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Solution
The fourth proportional to 664,723.96, 917,385.42 and 396,451.96 is: 547,143.28
Step by Step Solution
- Step 1: Write the proportion equation
664,723.96 : 917,385.42 = 396,451.96 : x - Step 2: Convert to fraction form
664,723.96/917,385.42 = 396,451.96/x - Step 3: Cross multiply
664,723.96x = 917,385.42 × 396,451.96 - Step 4: Simplify right side
664,723.96x = 363,699,247,834.42 - Step 5: Solve for x
x = 363,699,247,834.42/664,723.96 - Step 6: Final answer
x = 547,143.28
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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.