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Finding the Fourth Proportional to 418,412,707.00, 627,709,854.09 and 127,272,262.96

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Solution

The fourth proportional to 418,412,707.00, 627,709,854.09 and 127,272,262.96 is: 190,936,011.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,412,707.00 : 627,709,854.09 = 127,272,262.96 : x
  2. Step 2: Convert to fraction form
    418,412,707.00/627,709,854.09 = 127,272,262.96/x
  3. Step 3: Cross multiply
    418,412,707.00x = 627,709,854.09 × 127,272,262.96
  4. Step 4: Simplify right side
    418,412,707.00x = 79,890,053,612,871,072
  5. Step 5: Solve for x
    x = 79,890,053,612,871,072/418,412,707.00
  6. Step 6: Final answer
    x = 190,936,011.93

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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.