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Finding the Fourth Proportional to 808,414.40, 1,212,794.40 and 247,505.60

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Solution

The fourth proportional to 808,414.40, 1,212,794.40 and 247,505.60 is: 371,311.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,414.40 : 1,212,794.40 = 247,505.60 : x
  2. Step 2: Convert to fraction form
    808,414.40/1,212,794.40 = 247,505.60/x
  3. Step 3: Cross multiply
    808,414.40x = 1,212,794.40 × 247,505.60
  4. Step 4: Simplify right side
    808,414.40x = 300,173,405,648.64
  5. Step 5: Solve for x
    x = 300,173,405,648.64/808,414.40
  6. Step 6: Final answer
    x = 371,311.30

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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.