Home / 392,784.78-589,176.38-108,474.60

Finding the Fourth Proportional to 392,784.78, 589,176.38 and 108,474.60

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Solution

The fourth proportional to 392,784.78, 589,176.38 and 108,474.60 is: 162,711.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,784.78 : 589,176.38 = 108,474.60 : x
  2. Step 2: Convert to fraction form
    392,784.78/589,176.38 = 108,474.60/x
  3. Step 3: Cross multiply
    392,784.78x = 589,176.38 × 108,474.60
  4. Step 4: Simplify right side
    392,784.78x = 63,910,672,421.13
  5. Step 5: Solve for x
    x = 63,910,672,421.13/392,784.78
  6. Step 6: Final answer
    x = 162,711.68

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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.