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Finding the Fourth Proportional to 631,393.44, 871,383 and 344,956.56

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Solution

The fourth proportional to 631,393.44, 871,383 and 344,956.56 is: 476,072.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,393.44 : 871,383 = 344,956.56 : x
  2. Step 2: Convert to fraction form
    631,393.44/871,383 = 344,956.56/x
  3. Step 3: Cross multiply
    631,393.44x = 871,383 × 344,956.56
  4. Step 4: Simplify right side
    631,393.44x = 300,589,282,122.48
  5. Step 5: Solve for x
    x = 300,589,282,122.48/631,393.44
  6. Step 6: Final answer
    x = 476,072.86

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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.