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Finding the Fourth Proportional to 663,471.72, 915,589.58 and 373,084.28

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Solution

The fourth proportional to 663,471.72, 915,589.58 and 373,084.28 is: 514,855.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,471.72 : 915,589.58 = 373,084.28 : x
  2. Step 2: Convert to fraction form
    663,471.72/915,589.58 = 373,084.28/x
  3. Step 3: Cross multiply
    663,471.72x = 915,589.58 × 373,084.28
  4. Step 4: Simplify right side
    663,471.72x = 341,592,079,229.80
  5. Step 5: Solve for x
    x = 341,592,079,229.80/663,471.72
  6. Step 6: Final answer
    x = 514,855.52

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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.