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Finding the Fourth Proportional to 663,682.56, 915,882.84 and 361,876.56

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Solution

The fourth proportional to 663,682.56, 915,882.84 and 361,876.56 is: 499,390.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,682.56 : 915,882.84 = 361,876.56 : x
  2. Step 2: Convert to fraction form
    663,682.56/915,882.84 = 361,876.56/x
  3. Step 3: Cross multiply
    663,682.56x = 915,882.84 × 361,876.56
  4. Step 4: Simplify right side
    663,682.56x = 331,436,531,502.23
  5. Step 5: Solve for x
    x = 331,436,531,502.23/663,682.56
  6. Step 6: Final answer
    x = 499,390.15

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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.