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Finding the Fourth Proportional to 512,496.90, 769,401.45 and 272,801.70

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Solution

The fourth proportional to 512,496.90, 769,401.45 and 272,801.70 is: 409,551.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,496.90 : 769,401.45 = 272,801.70 : x
  2. Step 2: Convert to fraction form
    512,496.90/769,401.45 = 272,801.70/x
  3. Step 3: Cross multiply
    512,496.90x = 769,401.45 × 272,801.70
  4. Step 4: Simplify right side
    512,496.90x = 209,894,023,542.47
  5. Step 5: Solve for x
    x = 209,894,023,542.47/512,496.90
  6. Step 6: Final answer
    x = 409,551.79

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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.