Finding the Fourth Proportional to 515,397.74, 711,248.19 and 289,041.26
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Solution
The fourth proportional to 515,397.74, 711,248.19 and 289,041.26 is: 398,876.55
Step by Step Solution
- Step 1: Write the proportion equation
515,397.74 : 711,248.19 = 289,041.26 : x - Step 2: Convert to fraction form
515,397.74/711,248.19 = 289,041.26/x - Step 3: Cross multiply
515,397.74x = 711,248.19 × 289,041.26 - Step 4: Simplify right side
515,397.74x = 205,580,073,010.32 - Step 5: Solve for x
x = 205,580,073,010.32/515,397.74 - Step 6: Final answer
x = 398,876.55
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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.