Home / 792,143.80-1,188,798.90-319,168.60

Finding the Fourth Proportional to 792,143.80, 1,188,798.90 and 319,168.60

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Solution

The fourth proportional to 792,143.80, 1,188,798.90 and 319,168.60 is: 478,987.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    792,143.80 : 1,188,798.90 = 319,168.60 : x
  2. Step 2: Convert to fraction form
    792,143.80/1,188,798.90 = 319,168.60/x
  3. Step 3: Cross multiply
    792,143.80x = 1,188,798.90 × 319,168.60
  4. Step 4: Simplify right side
    792,143.80x = 379,427,280,594.54
  5. Step 5: Solve for x
    x = 379,427,280,594.54/792,143.80
  6. Step 6: Final answer
    x = 478,987.88

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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.