Home / 792,112.80-1,188,752.40-319,137.60

Finding the Fourth Proportional to 792,112.80, 1,188,752.40 and 319,137.60

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Solution

The fourth proportional to 792,112.80, 1,188,752.40 and 319,137.60 is: 478,941.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    792,112.80 : 1,188,752.40 = 319,137.60 : x
  2. Step 2: Convert to fraction form
    792,112.80/1,188,752.40 = 319,137.60/x
  3. Step 3: Cross multiply
    792,112.80x = 1,188,752.40 × 319,137.60
  4. Step 4: Simplify right side
    792,112.80x = 379,375,587,930.24
  5. Step 5: Solve for x
    x = 379,375,587,930.24/792,112.80
  6. Step 6: Final answer
    x = 478,941.37

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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.