Home / 819,182.88-1,228,249.44-398,229.12

Finding the Fourth Proportional to 819,182.88, 1,228,249.44 and 398,229.12

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Solution

The fourth proportional to 819,182.88, 1,228,249.44 and 398,229.12 is: 597,088.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,182.88 : 1,228,249.44 = 398,229.12 : x
  2. Step 2: Convert to fraction form
    819,182.88/1,228,249.44 = 398,229.12/x
  3. Step 3: Cross multiply
    819,182.88x = 1,228,249.44 × 398,229.12
  4. Step 4: Simplify right side
    819,182.88x = 489,124,693,631.69
  5. Step 5: Solve for x
    x = 489,124,693,631.69/819,182.88
  6. Step 6: Final answer
    x = 597,088.52

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Double scale
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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.