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Finding the Fourth Proportional to 631,429.36, 871,432.56 and 344,992.48

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Solution

The fourth proportional to 631,429.36, 871,432.56 and 344,992.48 is: 476,122.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,429.36 : 871,432.56 = 344,992.48 : x
  2. Step 2: Convert to fraction form
    631,429.36/871,432.56 = 344,992.48/x
  3. Step 3: Cross multiply
    631,429.36x = 871,432.56 × 344,992.48
  4. Step 4: Simplify right side
    631,429.36x = 300,637,680,027.15
  5. Step 5: Solve for x
    x = 300,637,680,027.15/631,429.36
  6. Step 6: Final answer
    x = 476,122.43

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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.