Home / 639,829.78-959,006.49-240,215.68

Finding the Fourth Proportional to 639,829.78, 959,006.49 and 240,215.68

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Solution

The fourth proportional to 639,829.78, 959,006.49 and 240,215.68 is: 360,046.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,829.78 : 959,006.49 = 240,215.68 : x
  2. Step 2: Convert to fraction form
    639,829.78/959,006.49 = 240,215.68/x
  3. Step 3: Cross multiply
    639,829.78x = 959,006.49 × 240,215.68
  4. Step 4: Simplify right side
    639,829.78x = 230,368,391,023.30
  5. Step 5: Solve for x
    x = 230,368,391,023.30/639,829.78
  6. Step 6: Final answer
    x = 360,046.37

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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.