Home / 487,528.20-731,292.30-328,095.90

Finding the Fourth Proportional to 487,528.20, 731,292.30 and 328,095.90

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Solution

The fourth proportional to 487,528.20, 731,292.30 and 328,095.90 is: 492,143.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,528.20 : 731,292.30 = 328,095.90 : x
  2. Step 2: Convert to fraction form
    487,528.20/731,292.30 = 328,095.90/x
  3. Step 3: Cross multiply
    487,528.20x = 731,292.30 × 328,095.90
  4. Step 4: Simplify right side
    487,528.20x = 239,934,005,331.57
  5. Step 5: Solve for x
    x = 239,934,005,331.57/487,528.20
  6. Step 6: Final answer
    x = 492,143.85

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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.