Home / 999,015,812.62-1,498,007,382.81-438,548,248.78

Finding the Fourth Proportional to 999,015,812.62, 1,498,007,382.81 and 438,548,248.78

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Solution

The fourth proportional to 999,015,812.62, 1,498,007,382.81 and 438,548,248.78 is: 657,595,711.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,015,812.62 : 1,498,007,382.81 = 438,548,248.78 : x
  2. Step 2: Convert to fraction form
    999,015,812.62/1,498,007,382.81 = 438,548,248.78/x
  3. Step 3: Cross multiply
    999,015,812.62x = 1,498,007,382.81 × 438,548,248.78
  4. Step 4: Simplify right side
    999,015,812.62x = 656,948,514,390,836,480
  5. Step 5: Solve for x
    x = 656,948,514,390,836,480/999,015,812.62
  6. Step 6: Final answer
    x = 657,595,711.79

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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.