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Finding the Fourth Proportional to 489,701.96, 675,854.65 and 274,853.78

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Solution

The fourth proportional to 489,701.96, 675,854.65 and 274,853.78 is: 379,335.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,701.96 : 675,854.65 = 274,853.78 : x
  2. Step 2: Convert to fraction form
    489,701.96/675,854.65 = 274,853.78/x
  3. Step 3: Cross multiply
    489,701.96x = 675,854.65 × 274,853.78
  4. Step 4: Simplify right side
    489,701.96x = 185,761,205,283.08
  5. Step 5: Solve for x
    x = 185,761,205,283.08/489,701.96
  6. Step 6: Final answer
    x = 379,335.23

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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.