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Finding the Fourth Proportional to 418,568,897.70, 627,853,346.55 and 127,433,708.10

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Solution

The fourth proportional to 418,568,897.70, 627,853,346.55 and 127,433,708.10 is: 191,150,562.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,568,897.70 : 627,853,346.55 = 127,433,708.10 : x
  2. Step 2: Convert to fraction form
    418,568,897.70/627,853,346.55 = 127,433,708.10/x
  3. Step 3: Cross multiply
    418,568,897.70x = 627,853,346.55 × 127,433,708.10
  4. Step 4: Simplify right side
    418,568,897.70x = 80,009,680,093,860,832
  5. Step 5: Solve for x
    x = 80,009,680,093,860,832/418,568,897.70
  6. Step 6: Final answer
    x = 191,150,562.15

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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.