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Finding the Fourth Proportional to 663,046.56, 915,001.92 and 376,509.60

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Solution

The fourth proportional to 663,046.56, 915,001.92 and 376,509.60 is: 519,581.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,046.56 : 915,001.92 = 376,509.60 : x
  2. Step 2: Convert to fraction form
    663,046.56/915,001.92 = 376,509.60/x
  3. Step 3: Cross multiply
    663,046.56x = 915,001.92 × 376,509.60
  4. Step 4: Simplify right side
    663,046.56x = 344,507,006,898.43
  5. Step 5: Solve for x
    x = 344,507,006,898.43/663,046.56
  6. Step 6: Final answer
    x = 519,581.92

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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.