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Finding the Fourth Proportional to 490,258.17, 676,436.87 and 286,192.85

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Solution

The fourth proportional to 490,258.17, 676,436.87 and 286,192.85 is: 394,876.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,258.17 : 676,436.87 = 286,192.85 : x
  2. Step 2: Convert to fraction form
    490,258.17/676,436.87 = 286,192.85/x
  3. Step 3: Cross multiply
    490,258.17x = 676,436.87 × 286,192.85
  4. Step 4: Simplify right side
    490,258.17x = 193,591,393,003.68
  5. Step 5: Solve for x
    x = 193,591,393,003.68/490,258.17
  6. Step 6: Final answer
    x = 394,876.42

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1.5x scale

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.