Home / 518,319,088.28-777,478,632.42-324,608,843.78

Finding the Fourth Proportional to 518,319,088.28, 777,478,632.42 and 324,608,843.78

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Solution

The fourth proportional to 518,319,088.28, 777,478,632.42 and 324,608,843.78 is: 486,913,265.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,319,088.28 : 777,478,632.42 = 324,608,843.78 : x
  2. Step 2: Convert to fraction form
    518,319,088.28/777,478,632.42 = 324,608,843.78/x
  3. Step 3: Cross multiply
    518,319,088.28x = 777,478,632.42 × 324,608,843.78
  4. Step 4: Simplify right side
    518,319,088.28x = 252,376,439,928,001,344
  5. Step 5: Solve for x
    x = 252,376,439,928,001,344/518,319,088.28
  6. Step 6: Final answer
    x = 486,913,265.66

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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.