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Finding the Fourth Proportional to 494,353.05, 682,212.57 and 290,412.56

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Solution

The fourth proportional to 494,353.05, 682,212.57 and 290,412.56 is: 400,772.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,353.05 : 682,212.57 = 290,412.56 : x
  2. Step 2: Convert to fraction form
    494,353.05/682,212.57 = 290,412.56/x
  3. Step 3: Cross multiply
    494,353.05x = 682,212.57 × 290,412.56
  4. Step 4: Simplify right side
    494,353.05x = 198,123,098,917.88
  5. Step 5: Solve for x
    x = 198,123,098,917.88/494,353.05
  6. Step 6: Final answer
    x = 400,772.48

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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.