Home / 418,781,932.85-628,241,100.91-123,706,993.97

Finding the Fourth Proportional to 418,781,932.85, 628,241,100.91 and 123,706,993.97

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Solution

The fourth proportional to 418,781,932.85, 628,241,100.91 and 123,706,993.97 is: 185,580,637.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,781,932.85 : 628,241,100.91 = 123,706,993.97 : x
  2. Step 2: Convert to fraction form
    418,781,932.85/628,241,100.91 = 123,706,993.97/x
  3. Step 3: Cross multiply
    418,781,932.85x = 628,241,100.91 × 123,706,993.97
  4. Step 4: Simplify right side
    418,781,932.85x = 77,717,818,083,240,864
  5. Step 5: Solve for x
    x = 77,717,818,083,240,864/418,781,932.85
  6. Step 6: Final answer
    x = 185,580,637.53

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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.