Home / 678,742.55-1,016,563.79-324,005.69

Finding the Fourth Proportional to 678,742.55, 1,016,563.79 and 324,005.69

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Solution

The fourth proportional to 678,742.55, 1,016,563.79 and 324,005.69 is: 485,268.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,742.55 : 1,016,563.79 = 324,005.69 : x
  2. Step 2: Convert to fraction form
    678,742.55/1,016,563.79 = 324,005.69/x
  3. Step 3: Cross multiply
    678,742.55x = 1,016,563.79 × 324,005.69
  4. Step 4: Simplify right side
    678,742.55x = 329,372,452,207.97
  5. Step 5: Solve for x
    x = 329,372,452,207.97/678,742.55
  6. Step 6: Final answer
    x = 485,268.61

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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.