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Finding the Fourth Proportional to 486,524.80, 729,787.20 and 399,044.80

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Solution

The fourth proportional to 486,524.80, 729,787.20 and 399,044.80 is: 598,567.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,524.80 : 729,787.20 = 399,044.80 : x
  2. Step 2: Convert to fraction form
    486,524.80/729,787.20 = 399,044.80/x
  3. Step 3: Cross multiply
    486,524.80x = 729,787.20 × 399,044.80
  4. Step 4: Simplify right side
    486,524.80x = 291,217,787,266.56
  5. Step 5: Solve for x
    x = 291,217,787,266.56/486,524.80
  6. Step 6: Final answer
    x = 598,567.20

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Similar ratio
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1.5x scale

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.