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Finding the Fourth Proportional to 663,461.26, 915,576.54 and 361,655.26

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Solution

The fourth proportional to 663,461.26, 915,576.54 and 361,655.26 is: 499,084.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,461.26 : 915,576.54 = 361,655.26 : x
  2. Step 2: Convert to fraction form
    663,461.26/915,576.54 = 361,655.26/x
  3. Step 3: Cross multiply
    663,461.26x = 915,576.54 × 361,655.26
  4. Step 4: Simplify right side
    663,461.26x = 331,123,071,623.60
  5. Step 5: Solve for x
    x = 331,123,071,623.60/663,461.26
  6. Step 6: Final answer
    x = 499,084.26

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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.