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Finding the Fourth Proportional to 489,756.05, 675,826.29 and 274,854.60

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Solution

The fourth proportional to 489,756.05, 675,826.29 and 274,854.60 is: 379,278.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,756.05 : 675,826.29 = 274,854.60 : x
  2. Step 2: Convert to fraction form
    489,756.05/675,826.29 = 274,854.60/x
  3. Step 3: Cross multiply
    489,756.05x = 675,826.29 × 274,854.60
  4. Step 4: Simplify right side
    489,756.05x = 185,753,963,605.01
  5. Step 5: Solve for x
    x = 185,753,963,605.01/489,756.05
  6. Step 6: Final answer
    x = 379,278.55

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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.