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Finding the Fourth Proportional to 631,500.36, 871,469.46 and 345,020.37

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Solution

The fourth proportional to 631,500.36, 871,469.46 and 345,020.37 is: 476,127.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,500.36 : 871,469.46 = 345,020.37 : x
  2. Step 2: Convert to fraction form
    631,500.36/871,469.46 = 345,020.37/x
  3. Step 3: Cross multiply
    631,500.36x = 871,469.46 × 345,020.37
  4. Step 4: Simplify right side
    631,500.36x = 300,674,715,532.90
  5. Step 5: Solve for x
    x = 300,674,715,532.90/631,500.36
  6. Step 6: Final answer
    x = 476,127.54

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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.