Home / 486,972.80-729,962.40-329,217.20

Finding the Fourth Proportional to 486,972.80, 729,962.40 and 329,217.20

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Solution

The fourth proportional to 486,972.80, 729,962.40 and 329,217.20 is: 493,489.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,972.80 : 729,962.40 = 329,217.20 : x
  2. Step 2: Convert to fraction form
    486,972.80/729,962.40 = 329,217.20/x
  3. Step 3: Cross multiply
    486,972.80x = 729,962.40 × 329,217.20
  4. Step 4: Simplify right side
    486,972.80x = 240,316,177,433.28
  5. Step 5: Solve for x
    x = 240,316,177,433.28/486,972.80
  6. Step 6: Final answer
    x = 493,489.94

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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.