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Finding the Fourth Proportional to 501,401.37, 691,892.78 and 275,046.87

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Solution

The fourth proportional to 501,401.37, 691,892.78 and 275,046.87 is: 379,542.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,401.37 : 691,892.78 = 275,046.87 : x
  2. Step 2: Convert to fraction form
    501,401.37/691,892.78 = 275,046.87/x
  3. Step 3: Cross multiply
    501,401.37x = 691,892.78 × 275,046.87
  4. Step 4: Simplify right side
    501,401.37x = 190,302,942,139.36
  5. Step 5: Solve for x
    x = 190,302,942,139.36/501,401.37
  6. Step 6: Final answer
    x = 379,542.13

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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.