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Finding the Fourth Proportional to 663,202.56, 915,186.96 and 376,685.04

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Solution

The fourth proportional to 663,202.56, 915,186.96 and 376,685.04 is: 519,806.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,202.56 : 915,186.96 = 376,685.04 : x
  2. Step 2: Convert to fraction form
    663,202.56/915,186.96 = 376,685.04/x
  3. Step 3: Cross multiply
    663,202.56x = 915,186.96 × 376,685.04
  4. Step 4: Simplify right side
    663,202.56x = 344,737,236,635.08
  5. Step 5: Solve for x
    x = 344,737,236,635.08/663,202.56
  6. Step 6: Final answer
    x = 519,806.85

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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.