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Finding the Fourth Proportional to 631,244.36, 871,103.72 and 344,765.56

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Solution

The fourth proportional to 631,244.36, 871,103.72 and 344,765.56 is: 475,769.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,244.36 : 871,103.72 = 344,765.56 : x
  2. Step 2: Convert to fraction form
    631,244.36/871,103.72 = 344,765.56/x
  3. Step 3: Cross multiply
    631,244.36x = 871,103.72 × 344,765.56
  4. Step 4: Simplify right side
    631,244.36x = 300,326,561,843.88
  5. Step 5: Solve for x
    x = 300,326,561,843.88/631,244.36
  6. Step 6: Final answer
    x = 475,769.10

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Double scale
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1.5x scale

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.