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Finding the Fourth Proportional to 494,713.72, 682,705.16 and 279,849.21

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Solution

The fourth proportional to 494,713.72, 682,705.16 and 279,849.21 is: 386,192.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,713.72 : 682,705.16 = 279,849.21 : x
  2. Step 2: Convert to fraction form
    494,713.72/682,705.16 = 279,849.21/x
  3. Step 3: Cross multiply
    494,713.72x = 682,705.16 × 279,849.21
  4. Step 4: Simplify right side
    494,713.72x = 191,054,494,876.15
  5. Step 5: Solve for x
    x = 191,054,494,876.15/494,713.72
  6. Step 6: Final answer
    x = 386,192.03

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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.