Home / 398,436,812.10-597,655,218.15-288,747,389.70

Finding the Fourth Proportional to 398,436,812.10, 597,655,218.15 and 288,747,389.70

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Solution

The fourth proportional to 398,436,812.10, 597,655,218.15 and 288,747,389.70 is: 433,121,084.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,436,812.10 : 597,655,218.15 = 288,747,389.70 : x
  2. Step 2: Convert to fraction form
    398,436,812.10/597,655,218.15 = 288,747,389.70/x
  3. Step 3: Cross multiply
    398,436,812.10x = 597,655,218.15 × 288,747,389.70
  4. Step 4: Simplify right side
    398,436,812.10x = 172,571,384,181,396,544
  5. Step 5: Solve for x
    x = 172,571,384,181,396,544/398,436,812.10
  6. Step 6: Final answer
    x = 433,121,084.55

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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.