Home / 819,361.72-1,229,042.60-258,439.96

Finding the Fourth Proportional to 819,361.72, 1,229,042.60 and 258,439.96

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Solution

The fourth proportional to 819,361.72, 1,229,042.60 and 258,439.96 is: 387,659.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,361.72 : 1,229,042.60 = 258,439.96 : x
  2. Step 2: Convert to fraction form
    819,361.72/1,229,042.60 = 258,439.96/x
  3. Step 3: Cross multiply
    819,361.72x = 1,229,042.60 × 258,439.96
  4. Step 4: Simplify right side
    819,361.72x = 317,633,720,382.30
  5. Step 5: Solve for x
    x = 317,633,720,382.30/819,361.72
  6. Step 6: Final answer
    x = 387,659.95

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Similar ratio
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1.5x scale

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.