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Finding the Fourth Proportional to 641,436.26, 962,336.03 and 321,201.54

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Solution

The fourth proportional to 641,436.26, 962,336.03 and 321,201.54 is: 481,893.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,436.26 : 962,336.03 = 321,201.54 : x
  2. Step 2: Convert to fraction form
    641,436.26/962,336.03 = 321,201.54/x
  3. Step 3: Cross multiply
    641,436.26x = 962,336.03 × 321,201.54
  4. Step 4: Simplify right side
    641,436.26x = 309,103,813,227.48
  5. Step 5: Solve for x
    x = 309,103,813,227.48/641,436.26
  6. Step 6: Final answer
    x = 481,893.27

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Double scale
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1.5x scale

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.