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Finding the Fourth Proportional to 802,907.60, 1,203,778.20 and 329,349.20

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Solution

The fourth proportional to 802,907.60, 1,203,778.20 and 329,349.20 is: 493,784.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    802,907.60 : 1,203,778.20 = 329,349.20 : x
  2. Step 2: Convert to fraction form
    802,907.60/1,203,778.20 = 329,349.20/x
  3. Step 3: Cross multiply
    802,907.60x = 1,203,778.20 × 329,349.20
  4. Step 4: Simplify right side
    802,907.60x = 396,463,387,147.44
  5. Step 5: Solve for x
    x = 396,463,387,147.44/802,907.60
  6. Step 6: Final answer
    x = 493,784.57

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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.