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Finding the Fourth Proportional to 494,709.66, 682,699.56 and 279,845.22

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Solution

The fourth proportional to 494,709.66, 682,699.56 and 279,845.22 is: 386,186.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,709.66 : 682,699.56 = 279,845.22 : x
  2. Step 2: Convert to fraction form
    494,709.66/682,699.56 = 279,845.22/x
  3. Step 3: Cross multiply
    494,709.66x = 682,699.56 × 279,845.22
  4. Step 4: Simplify right side
    494,709.66x = 191,050,208,562.10
  5. Step 5: Solve for x
    x = 191,050,208,562.10/494,709.66
  6. Step 6: Final answer
    x = 386,186.53

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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.