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Finding the Fourth Proportional to 631,558.42, 871,540.34 and 345,072.36

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Solution

The fourth proportional to 631,558.42, 871,540.34 and 345,072.36 is: 476,194.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,558.42 : 871,540.34 = 345,072.36 : x
  2. Step 2: Convert to fraction form
    631,558.42/871,540.34 = 345,072.36/x
  3. Step 3: Cross multiply
    631,558.42x = 871,540.34 × 345,072.36
  4. Step 4: Simplify right side
    631,558.42x = 300,744,481,959.00
  5. Step 5: Solve for x
    x = 300,744,481,959.00/631,558.42
  6. Step 6: Final answer
    x = 476,194.24

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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.