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Finding the Fourth Proportional to 631,524.60, 871,493.78 and 345,038.54

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Solution

The fourth proportional to 631,524.60, 871,493.78 and 345,038.54 is: 476,147.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,524.60 : 871,493.78 = 345,038.54 : x
  2. Step 2: Convert to fraction form
    631,524.60/871,493.78 = 345,038.54/x
  3. Step 3: Cross multiply
    631,524.60x = 871,493.78 × 345,038.54
  4. Step 4: Simplify right side
    631,524.60x = 300,698,941,470.28
  5. Step 5: Solve for x
    x = 300,698,941,470.28/631,524.60
  6. Step 6: Final answer
    x = 476,147.63

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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.