Home / 819,761.52-1,229,757.30-287,160.60

Finding the Fourth Proportional to 819,761.52, 1,229,757.30 and 287,160.60

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Solution

The fourth proportional to 819,761.52, 1,229,757.30 and 287,160.60 is: 430,781.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,761.52 : 1,229,757.30 = 287,160.60 : x
  2. Step 2: Convert to fraction form
    819,761.52/1,229,757.30 = 287,160.60/x
  3. Step 3: Cross multiply
    819,761.52x = 1,229,757.30 × 287,160.60
  4. Step 4: Simplify right side
    819,761.52x = 353,137,844,122.38
  5. Step 5: Solve for x
    x = 353,137,844,122.38/819,761.52
  6. Step 6: Final answer
    x = 430,781.19

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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.