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Finding the Fourth Proportional to 663,253.29, 915,029.69 and 408,161.61

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Solution

The fourth proportional to 663,253.29, 915,029.69 and 408,161.61 is: 563,103.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,253.29 : 915,029.69 = 408,161.61 : x
  2. Step 2: Convert to fraction form
    663,253.29/915,029.69 = 408,161.61/x
  3. Step 3: Cross multiply
    663,253.29x = 915,029.69 × 408,161.61
  4. Step 4: Simplify right side
    663,253.29x = 373,479,991,468.20
  5. Step 5: Solve for x
    x = 373,479,991,468.20/663,253.29
  6. Step 6: Final answer
    x = 563,103.11

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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.