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Finding the Fourth Proportional to 484,604.64, 726,906.76 and 129,609.48

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Solution

The fourth proportional to 484,604.64, 726,906.76 and 129,609.48 is: 194,414.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,604.64 : 726,906.76 = 129,609.48 : x
  2. Step 2: Convert to fraction form
    484,604.64/726,906.76 = 129,609.48/x
  3. Step 3: Cross multiply
    484,604.64x = 726,906.76 × 129,609.48
  4. Step 4: Simplify right side
    484,604.64x = 94,214,007,172.08
  5. Step 5: Solve for x
    x = 94,214,007,172.08/484,604.64
  6. Step 6: Final answer
    x = 194,414.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.