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Finding the Fourth Proportional to 494,744.63, 682,747.79 and 279,880.13

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Solution

The fourth proportional to 494,744.63, 682,747.79 and 279,880.13 is: 386,234.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,744.63 : 682,747.79 = 279,880.13 : x
  2. Step 2: Convert to fraction form
    494,744.63/682,747.79 = 279,880.13/x
  3. Step 3: Cross multiply
    494,744.63x = 682,747.79 × 279,880.13
  4. Step 4: Simplify right side
    494,744.63x = 191,087,537,508.37
  5. Step 5: Solve for x
    x = 191,087,537,508.37/494,744.63
  6. Step 6: Final answer
    x = 386,234.69

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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.