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Finding the Fourth Proportional to 494,707.52, 682,698.90 and 279,842.97

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Solution

The fourth proportional to 494,707.52, 682,698.90 and 279,842.97 is: 386,184.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,707.52 : 682,698.90 = 279,842.97 : x
  2. Step 2: Convert to fraction form
    494,707.52/682,698.90 = 279,842.97/x
  3. Step 3: Cross multiply
    494,707.52x = 682,698.90 × 279,842.97
  4. Step 4: Simplify right side
    494,707.52x = 191,048,486,084.99
  5. Step 5: Solve for x
    x = 191,048,486,084.99/494,707.52
  6. Step 6: Final answer
    x = 386,184.73

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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.