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Finding the Fourth Proportional to 663,265.74, 915,306.75 and 361,459.50

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Solution

The fourth proportional to 663,265.74, 915,306.75 and 361,459.50 is: 498,814.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,265.74 : 915,306.75 = 361,459.50 : x
  2. Step 2: Convert to fraction form
    663,265.74/915,306.75 = 361,459.50/x
  3. Step 3: Cross multiply
    663,265.74x = 915,306.75 × 361,459.50
  4. Step 4: Simplify right side
    663,265.74x = 330,846,320,201.63
  5. Step 5: Solve for x
    x = 330,846,320,201.63/663,265.74
  6. Step 6: Final answer
    x = 498,814.13

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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.