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Finding the Fourth Proportional to 501,288.44, 691,781.46 and 274,935.56

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Solution

The fourth proportional to 501,288.44, 691,781.46 and 274,935.56 is: 379,412.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,288.44 : 691,781.46 = 274,935.56 : x
  2. Step 2: Convert to fraction form
    501,288.44/691,781.46 = 274,935.56/x
  3. Step 3: Cross multiply
    501,288.44x = 691,781.46 × 274,935.56
  4. Step 4: Simplify right side
    501,288.44x = 190,195,323,102.72
  5. Step 5: Solve for x
    x = 190,195,323,102.72/501,288.44
  6. Step 6: Final answer
    x = 379,412.94

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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.