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Finding the Fourth Proportional to 631,169.40, 871,020.71 and 344,697.92

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Solution

The fourth proportional to 631,169.40, 871,020.71 and 344,697.92 is: 475,686.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,169.40 : 871,020.71 = 344,697.92 : x
  2. Step 2: Convert to fraction form
    631,169.40/871,020.71 = 344,697.92/x
  3. Step 3: Cross multiply
    631,169.40x = 871,020.71 × 344,697.92
  4. Step 4: Simplify right side
    631,169.40x = 300,239,020,935.33
  5. Step 5: Solve for x
    x = 300,239,020,935.33/631,169.40
  6. Step 6: Final answer
    x = 475,686.91

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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.