Home / 522,085.20-781,572.60-311,614.80

Finding the Fourth Proportional to 522,085.20, 781,572.60 and 311,614.80

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Solution

The fourth proportional to 522,085.20, 781,572.60 and 311,614.80 is: 466,493.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,085.20 : 781,572.60 = 311,614.80 : x
  2. Step 2: Convert to fraction form
    522,085.20/781,572.60 = 311,614.80/x
  3. Step 3: Cross multiply
    522,085.20x = 781,572.60 × 311,614.80
  4. Step 4: Simplify right side
    522,085.20x = 243,549,589,434.48
  5. Step 5: Solve for x
    x = 243,549,589,434.48/522,085.20
  6. Step 6: Final answer
    x = 466,493.95

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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.