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Finding the Fourth Proportional to 802,238.08, 1,203,046.08 and 428,056.96

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Solution

The fourth proportional to 802,238.08, 1,203,046.08 and 428,056.96 is: 641,919.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    802,238.08 : 1,203,046.08 = 428,056.96 : x
  2. Step 2: Convert to fraction form
    802,238.08/1,203,046.08 = 428,056.96/x
  3. Step 3: Cross multiply
    802,238.08x = 1,203,046.08 × 428,056.96
  4. Step 4: Simplify right side
    802,238.08x = 514,972,247,744.72
  5. Step 5: Solve for x
    x = 514,972,247,744.72/802,238.08
  6. Step 6: Final answer
    x = 641,919.48

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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.