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Finding the Fourth Proportional to 663,306.64, 915,366.20 and 376,842.44

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Solution

The fourth proportional to 663,306.64, 915,366.20 and 376,842.44 is: 520,044.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,306.64 : 915,366.20 = 376,842.44 : x
  2. Step 2: Convert to fraction form
    663,306.64/915,366.20 = 376,842.44/x
  3. Step 3: Cross multiply
    663,306.64x = 915,366.20 × 376,842.44
  4. Step 4: Simplify right side
    663,306.64x = 344,948,832,705.73
  5. Step 5: Solve for x
    x = 344,948,832,705.73/663,306.64
  6. Step 6: Final answer
    x = 520,044.30

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1.5x scale

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.