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Finding the Fourth Proportional to 800,838.36, 1,200,420.60 and 267,921

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Solution

The fourth proportional to 800,838.36, 1,200,420.60 and 267,921 is: 401,601.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,838.36 : 1,200,420.60 = 267,921 : x
  2. Step 2: Convert to fraction form
    800,838.36/1,200,420.60 = 267,921/x
  3. Step 3: Cross multiply
    800,838.36x = 1,200,420.60 × 267,921
  4. Step 4: Simplify right side
    800,838.36x = 321,617,887,572.60
  5. Step 5: Solve for x
    x = 321,617,887,572.60/800,838.36
  6. Step 6: Final answer
    x = 401,601.50

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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.