Home / 678,549.20-1,016,273.45-323,812.33

Finding the Fourth Proportional to 678,549.20, 1,016,273.45 and 323,812.33

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Solution

The fourth proportional to 678,549.20, 1,016,273.45 and 323,812.33 is: 484,978.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,549.20 : 1,016,273.45 = 323,812.33 : x
  2. Step 2: Convert to fraction form
    678,549.20/1,016,273.45 = 323,812.33/x
  3. Step 3: Cross multiply
    678,549.20x = 1,016,273.45 × 323,812.33
  4. Step 4: Simplify right side
    678,549.20x = 329,081,873,761.64
  5. Step 5: Solve for x
    x = 329,081,873,761.64/678,549.20
  6. Step 6: Final answer
    x = 484,978.65

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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.