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Finding the Fourth Proportional to 663,736.71, 915,954.96 and 361,930.71

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Solution

The fourth proportional to 663,736.71, 915,954.96 and 361,930.71 is: 499,463.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,736.71 : 915,954.96 = 361,930.71 : x
  2. Step 2: Convert to fraction form
    663,736.71/915,954.96 = 361,930.71/x
  3. Step 3: Cross multiply
    663,736.71x = 915,954.96 × 361,930.71
  4. Step 4: Simplify right side
    663,736.71x = 331,512,229,000.82
  5. Step 5: Solve for x
    x = 331,512,229,000.82/663,736.71
  6. Step 6: Final answer
    x = 499,463.45

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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.