Home / 857,972.91-1,181,729.76-639,481.39

Finding the Fourth Proportional to 857,972.91, 1,181,729.76 and 639,481.39

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Solution

The fourth proportional to 857,972.91, 1,181,729.76 and 639,481.39 is: 880,790.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,972.91 : 1,181,729.76 = 639,481.39 : x
  2. Step 2: Convert to fraction form
    857,972.91/1,181,729.76 = 639,481.39/x
  3. Step 3: Cross multiply
    857,972.91x = 1,181,729.76 × 639,481.39
  4. Step 4: Simplify right side
    857,972.91x = 755,694,189,529.17
  5. Step 5: Solve for x
    x = 755,694,189,529.17/857,972.91
  6. Step 6: Final answer
    x = 880,790.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.