Home / 921,161.88-1,381,149.36-388,540.44

Finding the Fourth Proportional to 921,161.88, 1,381,149.36 and 388,540.44

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Solution

The fourth proportional to 921,161.88, 1,381,149.36 and 388,540.44 is: 582,560.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,161.88 : 1,381,149.36 = 388,540.44 : x
  2. Step 2: Convert to fraction form
    921,161.88/1,381,149.36 = 388,540.44/x
  3. Step 3: Cross multiply
    921,161.88x = 1,381,149.36 × 388,540.44
  4. Step 4: Simplify right side
    921,161.88x = 536,632,380,040.12
  5. Step 5: Solve for x
    x = 536,632,380,040.12/921,161.88
  6. Step 6: Final answer
    x = 582,560.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.