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Finding the Fourth Proportional to 489,709.98, 675,799.77 and 274,850.04

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Solution

The fourth proportional to 489,709.98, 675,799.77 and 274,850.04 is: 379,293.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,709.98 : 675,799.77 = 274,850.04 : x
  2. Step 2: Convert to fraction form
    489,709.98/675,799.77 = 274,850.04/x
  3. Step 3: Cross multiply
    489,709.98x = 675,799.77 × 274,850.04
  4. Step 4: Simplify right side
    489,709.98x = 185,743,593,816.49
  5. Step 5: Solve for x
    x = 185,743,593,816.49/489,709.98
  6. Step 6: Final answer
    x = 379,293.05

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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.