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Finding the Fourth Proportional to 663,461.76, 915,577.23 and 361,655.76

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Solution

The fourth proportional to 663,461.76, 915,577.23 and 361,655.76 is: 499,084.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,461.76 : 915,577.23 = 361,655.76 : x
  2. Step 2: Convert to fraction form
    663,461.76/915,577.23 = 361,655.76/x
  3. Step 3: Cross multiply
    663,461.76x = 915,577.23 × 361,655.76
  4. Step 4: Simplify right side
    663,461.76x = 331,123,778,954.35
  5. Step 5: Solve for x
    x = 331,123,778,954.35/663,461.76
  6. Step 6: Final answer
    x = 499,084.95

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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.