Home / 809,778.36-1,117,511.82-447,201.48

Finding the Fourth Proportional to 809,778.36, 1,117,511.82 and 447,201.48

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Solution

The fourth proportional to 809,778.36, 1,117,511.82 and 447,201.48 is: 617,147.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,778.36 : 1,117,511.82 = 447,201.48 : x
  2. Step 2: Convert to fraction form
    809,778.36/1,117,511.82 = 447,201.48/x
  3. Step 3: Cross multiply
    809,778.36x = 1,117,511.82 × 447,201.48
  4. Step 4: Simplify right side
    809,778.36x = 499,752,939,821.49
  5. Step 5: Solve for x
    x = 499,752,939,821.49/809,778.36
  6. Step 6: Final answer
    x = 617,147.81

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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.