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Finding the Fourth Proportional to 494,718.47, 682,711.71 and 279,853.96

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Solution

The fourth proportional to 494,718.47, 682,711.71 and 279,853.96 is: 386,198.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,718.47 : 682,711.71 = 279,853.96 : x
  2. Step 2: Convert to fraction form
    494,718.47/682,711.71 = 279,853.96/x
  3. Step 3: Cross multiply
    494,718.47x = 682,711.71 × 279,853.96
  4. Step 4: Simplify right side
    494,718.47x = 191,059,575,581.87
  5. Step 5: Solve for x
    x = 191,059,575,581.87/494,718.47
  6. Step 6: Final answer
    x = 386,198.59

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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.