Home / 722,753,874.20-997,406,325.03-392,729,013.20

Finding the Fourth Proportional to 722,753,874.20, 997,406,325.03 and 392,729,013.20

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Solution

The fourth proportional to 722,753,874.20, 997,406,325.03 and 392,729,013.20 is: 541,969,286.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,753,874.20 : 997,406,325.03 = 392,729,013.20 : x
  2. Step 2: Convert to fraction form
    722,753,874.20/997,406,325.03 = 392,729,013.20/x
  3. Step 3: Cross multiply
    722,753,874.20x = 997,406,325.03 × 392,729,013.20
  4. Step 4: Simplify right side
    722,753,874.20x = 391,710,401,792,436,608
  5. Step 5: Solve for x
    x = 391,710,401,792,436,608/722,753,874.20
  6. Step 6: Final answer
    x = 541,969,286.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.