Home / 809,424.40-1,214,914.20-410,515.60

Finding the Fourth Proportional to 809,424.40, 1,214,914.20 and 410,515.60

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Solution

The fourth proportional to 809,424.40, 1,214,914.20 and 410,515.60 is: 616,167.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,424.40 : 1,214,914.20 = 410,515.60 : x
  2. Step 2: Convert to fraction form
    809,424.40/1,214,914.20 = 410,515.60/x
  3. Step 3: Cross multiply
    809,424.40x = 1,214,914.20 × 410,515.60
  4. Step 4: Simplify right side
    809,424.40x = 498,741,231,761.52
  5. Step 5: Solve for x
    x = 498,741,231,761.52/809,424.40
  6. Step 6: Final answer
    x = 616,167.78

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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.