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Finding the Fourth Proportional to 486,001.80, 729,002.70 and 432,857.70

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Solution

The fourth proportional to 486,001.80, 729,002.70 and 432,857.70 is: 649,286.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,001.80 : 729,002.70 = 432,857.70 : x
  2. Step 2: Convert to fraction form
    486,001.80/729,002.70 = 432,857.70/x
  3. Step 3: Cross multiply
    486,001.80x = 729,002.70 × 432,857.70
  4. Step 4: Simplify right side
    486,001.80x = 315,554,432,015.79
  5. Step 5: Solve for x
    x = 315,554,432,015.79/486,001.80
  6. Step 6: Final answer
    x = 649,286.55

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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.