Home / 681,115.30-1,021,721.55-207,799.90

Finding the Fourth Proportional to 681,115.30, 1,021,721.55 and 207,799.90

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Solution

The fourth proportional to 681,115.30, 1,021,721.55 and 207,799.90 is: 311,714.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,115.30 : 1,021,721.55 = 207,799.90 : x
  2. Step 2: Convert to fraction form
    681,115.30/1,021,721.55 = 207,799.90/x
  3. Step 3: Cross multiply
    681,115.30x = 1,021,721.55 × 207,799.90
  4. Step 4: Simplify right side
    681,115.30x = 212,313,635,917.85
  5. Step 5: Solve for x
    x = 212,313,635,917.85/681,115.30
  6. Step 6: Final answer
    x = 311,714.68

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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.