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Finding the Fourth Proportional to 682,550.78, 942,107.42 and 396,163.13

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Solution

The fourth proportional to 682,550.78, 942,107.42 and 396,163.13 is: 546,813.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,550.78 : 942,107.42 = 396,163.13 : x
  2. Step 2: Convert to fraction form
    682,550.78/942,107.42 = 396,163.13/x
  3. Step 3: Cross multiply
    682,550.78x = 942,107.42 × 396,163.13
  4. Step 4: Simplify right side
    682,550.78x = 373,228,220,583.30
  5. Step 5: Solve for x
    x = 373,228,220,583.30/682,550.78
  6. Step 6: Final answer
    x = 546,813.86

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.