Home / 819,517.20-1,228,223.76-392,413.06

Finding the Fourth Proportional to 819,517.20, 1,228,223.76 and 392,413.06

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Solution

The fourth proportional to 819,517.20, 1,228,223.76 and 392,413.06 is: 588,115.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,517.20 : 1,228,223.76 = 392,413.06 : x
  2. Step 2: Convert to fraction form
    819,517.20/1,228,223.76 = 392,413.06/x
  3. Step 3: Cross multiply
    819,517.20x = 1,228,223.76 × 392,413.06
  4. Step 4: Simplify right side
    819,517.20x = 481,971,037,181.28
  5. Step 5: Solve for x
    x = 481,971,037,181.28/819,517.20
  6. Step 6: Final answer
    x = 588,115.83

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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.