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Finding the Fourth Proportional to 880,833.20, 1,321,768.20 and 319,794.80

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Solution

The fourth proportional to 880,833.20, 1,321,768.20 and 319,794.80 is: 479,880.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,833.20 : 1,321,768.20 = 319,794.80 : x
  2. Step 2: Convert to fraction form
    880,833.20/1,321,768.20 = 319,794.80/x
  3. Step 3: Cross multiply
    880,833.20x = 1,321,768.20 × 319,794.80
  4. Step 4: Simplify right side
    880,833.20x = 422,694,597,165.36
  5. Step 5: Solve for x
    x = 422,694,597,165.36/880,833.20
  6. Step 6: Final answer
    x = 479,880.41

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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.