Home / 639,422.97-882,403.79-352,943.16

Finding the Fourth Proportional to 639,422.97, 882,403.79 and 352,943.16

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Solution

The fourth proportional to 639,422.97, 882,403.79 and 352,943.16 is: 487,061.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,422.97 : 882,403.79 = 352,943.16 : x
  2. Step 2: Convert to fraction form
    639,422.97/882,403.79 = 352,943.16/x
  3. Step 3: Cross multiply
    639,422.97x = 882,403.79 × 352,943.16
  4. Step 4: Simplify right side
    639,422.97x = 311,438,380,273.86
  5. Step 5: Solve for x
    x = 311,438,380,273.86/639,422.97
  6. Step 6: Final answer
    x = 487,061.61

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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.