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Finding the Fourth Proportional to 494,538.72, 682,476.44 and 279,710.52

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Solution

The fourth proportional to 494,538.72, 682,476.44 and 279,710.52 is: 386,007.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,538.72 : 682,476.44 = 279,710.52 : x
  2. Step 2: Convert to fraction form
    494,538.72/682,476.44 = 279,710.52/x
  3. Step 3: Cross multiply
    494,538.72x = 682,476.44 × 279,710.52
  4. Step 4: Simplify right side
    494,538.72x = 190,895,839,920.15
  5. Step 5: Solve for x
    x = 190,895,839,920.15/494,538.72
  6. Step 6: Final answer
    x = 386,007.87

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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.