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Finding the Fourth Proportional to 494,776.72, 682,791.96 and 279,912.34

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Solution

The fourth proportional to 494,776.72, 682,791.96 and 279,912.34 is: 386,279.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,776.72 : 682,791.96 = 279,912.34 : x
  2. Step 2: Convert to fraction form
    494,776.72/682,791.96 = 279,912.34/x
  3. Step 3: Cross multiply
    494,776.72x = 682,791.96 × 279,912.34
  4. Step 4: Simplify right side
    494,776.72x = 191,121,895,256.79
  5. Step 5: Solve for x
    x = 191,121,895,256.79/494,776.72
  6. Step 6: Final answer
    x = 386,279.08

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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.