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Finding the Fourth Proportional to 802,620.80, 1,204,611.60 and 329,645.60

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Solution

The fourth proportional to 802,620.80, 1,204,611.60 and 329,645.60 is: 494,747.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    802,620.80 : 1,204,611.60 = 329,645.60 : x
  2. Step 2: Convert to fraction form
    802,620.80/1,204,611.60 = 329,645.60/x
  3. Step 3: Cross multiply
    802,620.80x = 1,204,611.60 × 329,645.60
  4. Step 4: Simplify right side
    802,620.80x = 397,094,913,648.96
  5. Step 5: Solve for x
    x = 397,094,913,648.96/802,620.80
  6. Step 6: Final answer
    x = 494,747.85

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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.