Home / 418,387,900.64-627,387,919.17-156,002,000.78

Finding the Fourth Proportional to 418,387,900.64, 627,387,919.17 and 156,002,000.78

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Solution

The fourth proportional to 418,387,900.64, 627,387,919.17 and 156,002,000.78 is: 233,930,690.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,387,900.64 : 627,387,919.17 = 156,002,000.78 : x
  2. Step 2: Convert to fraction form
    418,387,900.64/627,387,919.17 = 156,002,000.78/x
  3. Step 3: Cross multiply
    418,387,900.64x = 627,387,919.17 × 156,002,000.78
  4. Step 4: Simplify right side
    418,387,900.64x = 97,873,770,652,583,968
  5. Step 5: Solve for x
    x = 97,873,770,652,583,968/418,387,900.64
  6. Step 6: Final answer
    x = 233,930,690.88

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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.