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Finding the Fourth Proportional to 486,959.80, 729,942.90 and 329,204.20

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Solution

The fourth proportional to 486,959.80, 729,942.90 and 329,204.20 is: 493,470.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,959.80 : 729,942.90 = 329,204.20 : x
  2. Step 2: Convert to fraction form
    486,959.80/729,942.90 = 329,204.20/x
  3. Step 3: Cross multiply
    486,959.80x = 729,942.90 × 329,204.20
  4. Step 4: Simplify right side
    486,959.80x = 240,300,268,440.18
  5. Step 5: Solve for x
    x = 240,300,268,440.18/486,959.80
  6. Step 6: Final answer
    x = 493,470.44

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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.