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Finding the Fourth Proportional to 494,646, 682,611.57 and 279,781.44

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Solution

The fourth proportional to 494,646, 682,611.57 and 279,781.44 is: 386,098.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,646 : 682,611.57 = 279,781.44 : x
  2. Step 2: Convert to fraction form
    494,646/682,611.57 = 279,781.44/x
  3. Step 3: Cross multiply
    494,646x = 682,611.57 × 279,781.44
  4. Step 4: Simplify right side
    494,646x = 190,982,048,015.26
  5. Step 5: Solve for x
    x = 190,982,048,015.26/494,646
  6. Step 6: Final answer
    x = 386,098.44

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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.