Home / 398,776,332.20-597,156,728.70-318,154,764.20

Finding the Fourth Proportional to 398,776,332.20, 597,156,728.70 and 318,154,764.20

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Solution

The fourth proportional to 398,776,332.20, 597,156,728.70 and 318,154,764.20 is: 476,428,119.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,776,332.20 : 597,156,728.70 = 318,154,764.20 : x
  2. Step 2: Convert to fraction form
    398,776,332.20/597,156,728.70 = 318,154,764.20/x
  3. Step 3: Cross multiply
    398,776,332.20x = 597,156,728.70 × 318,154,764.20
  4. Step 4: Simplify right side
    398,776,332.20x = 189,988,258,209,991,872
  5. Step 5: Solve for x
    x = 189,988,258,209,991,872/398,776,332.20
  6. Step 6: Final answer
    x = 476,428,119.90

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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.