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Finding the Fourth Proportional to 518,363.70, 777,545.55 and 488,839.20

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Solution

The fourth proportional to 518,363.70, 777,545.55 and 488,839.20 is: 733,258.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,363.70 : 777,545.55 = 488,839.20 : x
  2. Step 2: Convert to fraction form
    518,363.70/777,545.55 = 488,839.20/x
  3. Step 3: Cross multiply
    518,363.70x = 777,545.55 × 488,839.20
  4. Step 4: Simplify right side
    518,363.70x = 380,094,744,625.56
  5. Step 5: Solve for x
    x = 380,094,744,625.56/518,363.70
  6. Step 6: Final answer
    x = 733,258.80

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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.