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Finding the Fourth Proportional to 489,755.43, 675,810.63 and 274,919.13

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Solution

The fourth proportional to 489,755.43, 675,810.63 and 274,919.13 is: 379,359.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,755.43 : 675,810.63 = 274,919.13 : x
  2. Step 2: Convert to fraction form
    489,755.43/675,810.63 = 274,919.13/x
  3. Step 3: Cross multiply
    489,755.43x = 675,810.63 × 274,919.13
  4. Step 4: Simplify right side
    489,755.43x = 185,793,270,444.35
  5. Step 5: Solve for x
    x = 185,793,270,444.35/489,755.43
  6. Step 6: Final answer
    x = 379,359.29

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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.