Home / 792,138.80-1,188,791.40-319,163.60

Finding the Fourth Proportional to 792,138.80, 1,188,791.40 and 319,163.60

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Solution

The fourth proportional to 792,138.80, 1,188,791.40 and 319,163.60 is: 478,980.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    792,138.80 : 1,188,791.40 = 319,163.60 : x
  2. Step 2: Convert to fraction form
    792,138.80/1,188,791.40 = 319,163.60/x
  3. Step 3: Cross multiply
    792,138.80x = 1,188,791.40 × 319,163.60
  4. Step 4: Simplify right side
    792,138.80x = 379,418,942,873.04
  5. Step 5: Solve for x
    x = 379,418,942,873.04/792,138.80
  6. Step 6: Final answer
    x = 478,980.38

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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.