Home / 678,753.60-1,018,351.83-323,721.48

Finding the Fourth Proportional to 678,753.60, 1,018,351.83 and 323,721.48

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Solution

The fourth proportional to 678,753.60, 1,018,351.83 and 323,721.48 is: 485,687.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,753.60 : 1,018,351.83 = 323,721.48 : x
  2. Step 2: Convert to fraction form
    678,753.60/1,018,351.83 = 323,721.48/x
  3. Step 3: Cross multiply
    678,753.60x = 1,018,351.83 × 323,721.48
  4. Step 4: Simplify right side
    678,753.60x = 329,662,361,568.31
  5. Step 5: Solve for x
    x = 329,662,361,568.31/678,753.60
  6. Step 6: Final answer
    x = 485,687.83

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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.