Home / 792,138.30-1,188,790.65-319,163.10

Finding the Fourth Proportional to 792,138.30, 1,188,790.65 and 319,163.10

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Solution

The fourth proportional to 792,138.30, 1,188,790.65 and 319,163.10 is: 478,979.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    792,138.30 : 1,188,790.65 = 319,163.10 : x
  2. Step 2: Convert to fraction form
    792,138.30/1,188,790.65 = 319,163.10/x
  3. Step 3: Cross multiply
    792,138.30x = 1,188,790.65 × 319,163.10
  4. Step 4: Simplify right side
    792,138.30x = 379,418,109,105.02
  5. Step 5: Solve for x
    x = 379,418,109,105.02/792,138.30
  6. Step 6: Final answer
    x = 478,979.63

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Double scale
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1.5x scale

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.