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Finding the Fourth Proportional to 521,715.34, 782,839.90 and 248,470.90

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Solution

The fourth proportional to 521,715.34, 782,839.90 and 248,470.90 is: 372,833.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,715.34 : 782,839.90 = 248,470.90 : x
  2. Step 2: Convert to fraction form
    521,715.34/782,839.90 = 248,470.90/x
  3. Step 3: Cross multiply
    521,715.34x = 782,839.90 × 248,470.90
  4. Step 4: Simplify right side
    521,715.34x = 194,512,934,508.91
  5. Step 5: Solve for x
    x = 194,512,934,508.91/521,715.34
  6. Step 6: Final answer
    x = 372,833.46

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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.