Home / 678,425.20-1,017,665.46-172,999.28

Finding the Fourth Proportional to 678,425.20, 1,017,665.46 and 172,999.28

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Solution

The fourth proportional to 678,425.20, 1,017,665.46 and 172,999.28 is: 259,505.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,425.20 : 1,017,665.46 = 172,999.28 : x
  2. Step 2: Convert to fraction form
    678,425.20/1,017,665.46 = 172,999.28/x
  3. Step 3: Cross multiply
    678,425.20x = 1,017,665.46 × 172,999.28
  4. Step 4: Simplify right side
    678,425.20x = 176,055,391,860.87
  5. Step 5: Solve for x
    x = 176,055,391,860.87/678,425.20
  6. Step 6: Final answer
    x = 259,505.97

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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.