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Finding the Fourth Proportional to 631,542.61, 871,537.15 and 359,611.61

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Solution

The fourth proportional to 631,542.61, 871,537.15 and 359,611.61 is: 496,268.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,542.61 : 871,537.15 = 359,611.61 : x
  2. Step 2: Convert to fraction form
    631,542.61/871,537.15 = 359,611.61/x
  3. Step 3: Cross multiply
    631,542.61x = 871,537.15 × 359,611.61
  4. Step 4: Simplify right side
    631,542.61x = 313,414,873,778.14
  5. Step 5: Solve for x
    x = 313,414,873,778.14/631,542.61
  6. Step 6: Final answer
    x = 496,268.77

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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.