Home / 860,456.49-1,290,687.17-261,422.61

Finding the Fourth Proportional to 860,456.49, 1,290,687.17 and 261,422.61

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Solution

The fourth proportional to 860,456.49, 1,290,687.17 and 261,422.61 is: 392,134.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,456.49 : 1,290,687.17 = 261,422.61 : x
  2. Step 2: Convert to fraction form
    860,456.49/1,290,687.17 = 261,422.61/x
  3. Step 3: Cross multiply
    860,456.49x = 1,290,687.17 × 261,422.61
  4. Step 4: Simplify right side
    860,456.49x = 337,414,807,367.80
  5. Step 5: Solve for x
    x = 337,414,807,367.80/860,456.49
  6. Step 6: Final answer
    x = 392,134.65

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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.