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Finding the Fourth Proportional to 631,305.72, 871,163.10 and 344,767.68

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Solution

The fourth proportional to 631,305.72, 871,163.10 and 344,767.68 is: 475,758.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,305.72 : 871,163.10 = 344,767.68 : x
  2. Step 2: Convert to fraction form
    631,305.72/871,163.10 = 344,767.68/x
  3. Step 3: Cross multiply
    631,305.72x = 871,163.10 × 344,767.68
  4. Step 4: Simplify right side
    631,305.72x = 300,348,880,888.61
  5. Step 5: Solve for x
    x = 300,348,880,888.61/631,305.72
  6. Step 6: Final answer
    x = 475,758.21

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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.