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Finding the Fourth Proportional to 494,722.98, 682,717.92 and 279,858.46

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Solution

The fourth proportional to 494,722.98, 682,717.92 and 279,858.46 is: 386,204.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,722.98 : 682,717.92 = 279,858.46 : x
  2. Step 2: Convert to fraction form
    494,722.98/682,717.92 = 279,858.46/x
  3. Step 3: Cross multiply
    494,722.98x = 682,717.92 × 279,858.46
  4. Step 4: Simplify right side
    494,722.98x = 191,064,385,705.60
  5. Step 5: Solve for x
    x = 191,064,385,705.60/494,722.98
  6. Step 6: Final answer
    x = 386,204.79

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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.