Home / 518,319,073.28-777,478,609.92-324,608,828.78

Finding the Fourth Proportional to 518,319,073.28, 777,478,609.92 and 324,608,828.78

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Solution

The fourth proportional to 518,319,073.28, 777,478,609.92 and 324,608,828.78 is: 486,913,243.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,319,073.28 : 777,478,609.92 = 324,608,828.78 : x
  2. Step 2: Convert to fraction form
    518,319,073.28/777,478,609.92 = 324,608,828.78/x
  3. Step 3: Cross multiply
    518,319,073.28x = 777,478,609.92 × 324,608,828.78
  4. Step 4: Simplify right side
    518,319,073.28x = 252,376,420,962,123,232
  5. Step 5: Solve for x
    x = 252,376,420,962,123,232/518,319,073.28
  6. Step 6: Final answer
    x = 486,913,243.16

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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.