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Finding the Fourth Proportional to 658,046.20, 987,069.30 and 284,069.20

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Solution

The fourth proportional to 658,046.20, 987,069.30 and 284,069.20 is: 426,103.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,046.20 : 987,069.30 = 284,069.20 : x
  2. Step 2: Convert to fraction form
    658,046.20/987,069.30 = 284,069.20/x
  3. Step 3: Cross multiply
    658,046.20x = 987,069.30 × 284,069.20
  4. Step 4: Simplify right side
    658,046.20x = 280,395,986,395.56
  5. Step 5: Solve for x
    x = 280,395,986,395.56/658,046.20
  6. Step 6: Final answer
    x = 426,103.80

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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.