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Finding the Fourth Proportional to 486,015.30, 729,022.95 and 432,871.20

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Solution

The fourth proportional to 486,015.30, 729,022.95 and 432,871.20 is: 649,306.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,015.30 : 729,022.95 = 432,871.20 : x
  2. Step 2: Convert to fraction form
    486,015.30/729,022.95 = 432,871.20/x
  3. Step 3: Cross multiply
    486,015.30x = 729,022.95 × 432,871.20
  4. Step 4: Simplify right side
    486,015.30x = 315,573,039,194.04
  5. Step 5: Solve for x
    x = 315,573,039,194.04/486,015.30
  6. Step 6: Final answer
    x = 649,306.80

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Similar ratio
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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.