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Finding the Fourth Proportional to 489,755.90, 675,826.08 and 274,854.44

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Solution

The fourth proportional to 489,755.90, 675,826.08 and 274,854.44 is: 379,278.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,755.90 : 675,826.08 = 274,854.44 : x
  2. Step 2: Convert to fraction form
    489,755.90/675,826.08 = 274,854.44/x
  3. Step 3: Cross multiply
    489,755.90x = 675,826.08 × 274,854.44
  4. Step 4: Simplify right side
    489,755.90x = 185,753,795,376.67
  5. Step 5: Solve for x
    x = 185,753,795,376.67/489,755.90
  6. Step 6: Final answer
    x = 379,278.32

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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.