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Finding the Fourth Proportional to 631,189.72, 871,003.56 and 344,651.68

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Solution

The fourth proportional to 631,189.72, 871,003.56 and 344,651.68 is: 475,598.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,189.72 : 871,003.56 = 344,651.68 : x
  2. Step 2: Convert to fraction form
    631,189.72/871,003.56 = 344,651.68/x
  3. Step 3: Cross multiply
    631,189.72x = 871,003.56 × 344,651.68
  4. Step 4: Simplify right side
    631,189.72x = 300,192,840,239.98
  5. Step 5: Solve for x
    x = 300,192,840,239.98/631,189.72
  6. Step 6: Final answer
    x = 475,598.43

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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.