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Finding the Fourth Proportional to 487,002.70, 730,504.05 and 274,426.30

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Solution

The fourth proportional to 487,002.70, 730,504.05 and 274,426.30 is: 411,639.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,002.70 : 730,504.05 = 274,426.30 : x
  2. Step 2: Convert to fraction form
    487,002.70/730,504.05 = 274,426.30/x
  3. Step 3: Cross multiply
    487,002.70x = 730,504.05 × 274,426.30
  4. Step 4: Simplify right side
    487,002.70x = 200,469,523,576.52
  5. Step 5: Solve for x
    x = 200,469,523,576.52/487,002.70
  6. Step 6: Final answer
    x = 411,639.45

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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.