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Finding the Fourth Proportional to 494,290.92, 682,114.32 and 279,423.84

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Solution

The fourth proportional to 494,290.92, 682,114.32 and 279,423.84 is: 385,600.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,290.92 : 682,114.32 = 279,423.84 : x
  2. Step 2: Convert to fraction form
    494,290.92/682,114.32 = 279,423.84/x
  3. Step 3: Cross multiply
    494,290.92x = 682,114.32 × 279,423.84
  4. Step 4: Simplify right side
    494,290.92x = 190,599,002,613.39
  5. Step 5: Solve for x
    x = 190,599,002,613.39/494,290.92
  6. Step 6: Final answer
    x = 385,600.86

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Similar ratio
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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.