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Finding the Fourth Proportional to 486,046.20, 729,069.30 and 385,662.90

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Solution

The fourth proportional to 486,046.20, 729,069.30 and 385,662.90 is: 578,494.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,046.20 : 729,069.30 = 385,662.90 : x
  2. Step 2: Convert to fraction form
    486,046.20/729,069.30 = 385,662.90/x
  3. Step 3: Cross multiply
    486,046.20x = 729,069.30 × 385,662.90
  4. Step 4: Simplify right side
    486,046.20x = 281,174,980,538.97
  5. Step 5: Solve for x
    x = 281,174,980,538.97/486,046.20
  6. Step 6: Final answer
    x = 578,494.35

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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.