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Finding the Fourth Proportional to 489,713.98, 675,805.28 and 274,854.04

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Solution

The fourth proportional to 489,713.98, 675,805.28 and 274,854.04 is: 379,298.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,713.98 : 675,805.28 = 274,854.04 : x
  2. Step 2: Convert to fraction form
    489,713.98/675,805.28 = 274,854.04/x
  3. Step 3: Cross multiply
    489,713.98x = 675,805.28 × 274,854.04
  4. Step 4: Simplify right side
    489,713.98x = 185,747,811,461.33
  5. Step 5: Solve for x
    x = 185,747,811,461.33/489,713.98
  6. Step 6: Final answer
    x = 379,298.57

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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.