Home / 641,039.57-961,609.92-214,577.90

Finding the Fourth Proportional to 641,039.57, 961,609.92 and 214,577.90

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Solution

The fourth proportional to 641,039.57, 961,609.92 and 214,577.90 is: 321,883.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,039.57 : 961,609.92 = 214,577.90 : x
  2. Step 2: Convert to fraction form
    641,039.57/961,609.92 = 214,577.90/x
  3. Step 3: Cross multiply
    641,039.57x = 961,609.92 × 214,577.90
  4. Step 4: Simplify right side
    641,039.57x = 206,340,231,371.83
  5. Step 5: Solve for x
    x = 206,340,231,371.83/641,039.57
  6. Step 6: Final answer
    x = 321,883.77

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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.