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Finding the Fourth Proportional to 489,702.47, 675,855.35 and 274,854.29

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Solution

The fourth proportional to 489,702.47, 675,855.35 and 274,854.29 is: 379,335.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,702.47 : 675,855.35 = 274,854.29 : x
  2. Step 2: Convert to fraction form
    489,702.47/675,855.35 = 274,854.29/x
  3. Step 3: Cross multiply
    489,702.47x = 675,855.35 × 274,854.29
  4. Step 4: Simplify right side
    489,702.47x = 185,761,737,613.40
  5. Step 5: Solve for x
    x = 185,761,737,613.40/489,702.47
  6. Step 6: Final answer
    x = 379,335.93

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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.