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Finding the Fourth Proportional to 494,712.48, 682,703.44 and 279,847.96

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Solution

The fourth proportional to 494,712.48, 682,703.44 and 279,847.96 is: 386,190.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,712.48 : 682,703.44 = 279,847.96 : x
  2. Step 2: Convert to fraction form
    494,712.48/682,703.44 = 279,847.96/x
  3. Step 3: Cross multiply
    494,712.48x = 682,703.44 × 279,847.96
  4. Step 4: Simplify right side
    494,712.48x = 191,053,164,968.98
  5. Step 5: Solve for x
    x = 191,053,164,968.98/494,712.48
  6. Step 6: Final answer
    x = 386,190.31

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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.