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Finding the Fourth Proportional to 489,755.22, 675,855.46 and 274,891.38

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Solution

The fourth proportional to 489,755.22, 675,855.46 and 274,891.38 is: 379,346.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,755.22 : 675,855.46 = 274,891.38 : x
  2. Step 2: Convert to fraction form
    489,755.22/675,855.46 = 274,891.38/x
  3. Step 3: Cross multiply
    489,755.22x = 675,855.46 × 274,891.38
  4. Step 4: Simplify right side
    489,755.22x = 185,786,840,079.94
  5. Step 5: Solve for x
    x = 185,786,840,079.94/489,755.22
  6. Step 6: Final answer
    x = 379,346.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.