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Finding the Fourth Proportional to 631,490.24, 871,469.07 and 345,028.07

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Solution

The fourth proportional to 631,490.24, 871,469.07 and 345,028.07 is: 476,145.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,490.24 : 871,469.07 = 345,028.07 : x
  2. Step 2: Convert to fraction form
    631,490.24/871,469.07 = 345,028.07/x
  3. Step 3: Cross multiply
    631,490.24x = 871,469.07 × 345,028.07
  4. Step 4: Simplify right side
    631,490.24x = 300,681,291,286.80
  5. Step 5: Solve for x
    x = 300,681,291,286.80/631,490.24
  6. Step 6: Final answer
    x = 476,145.59

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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.