Home / 398,776,331.20-597,156,727.20-318,154,763.20

Finding the Fourth Proportional to 398,776,331.20, 597,156,727.20 and 318,154,763.20

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Solution

The fourth proportional to 398,776,331.20, 597,156,727.20 and 318,154,763.20 is: 476,428,118.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,776,331.20 : 597,156,727.20 = 318,154,763.20 : x
  2. Step 2: Convert to fraction form
    398,776,331.20/597,156,727.20 = 318,154,763.20/x
  3. Step 3: Cross multiply
    398,776,331.20x = 597,156,727.20 × 318,154,763.20
  4. Step 4: Simplify right side
    398,776,331.20x = 189,988,257,135,603,008
  5. Step 5: Solve for x
    x = 189,988,257,135,603,008/398,776,331.20
  6. Step 6: Final answer
    x = 476,428,118.40

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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.