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Finding the Fourth Proportional to 631,600.32, 871,614.54 and 345,120.36

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Solution

The fourth proportional to 631,600.32, 871,614.54 and 345,120.36 is: 476,269.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,600.32 : 871,614.54 = 345,120.36 : x
  2. Step 2: Convert to fraction form
    631,600.32/871,614.54 = 345,120.36/x
  3. Step 3: Cross multiply
    631,600.32x = 871,614.54 × 345,120.36
  4. Step 4: Simplify right side
    631,600.32x = 300,811,923,826.03
  5. Step 5: Solve for x
    x = 300,811,923,826.03/631,600.32
  6. Step 6: Final answer
    x = 476,269.43

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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.