Finding the Fourth Proportional to 515,414.24, 711,270.96 and 289,057.76
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Solution
The fourth proportional to 515,414.24, 711,270.96 and 289,057.76 is: 398,899.32
Step by Step Solution
- Step 1: Write the proportion equation
515,414.24 : 711,270.96 = 289,057.76 : x - Step 2: Convert to fraction form
515,414.24/711,270.96 = 289,057.76/x - Step 3: Cross multiply
515,414.24x = 711,270.96 × 289,057.76 - Step 4: Simplify right side
515,414.24x = 205,598,390,450.65 - Step 5: Solve for x
x = 205,598,390,450.65/515,414.24 - Step 6: Final answer
x = 398,899.32
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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.