Home / 809,321.70-1,213,982.55-659,730.90

Finding the Fourth Proportional to 809,321.70, 1,213,982.55 and 659,730.90

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Solution

The fourth proportional to 809,321.70, 1,213,982.55 and 659,730.90 is: 989,596.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,321.70 : 1,213,982.55 = 659,730.90 : x
  2. Step 2: Convert to fraction form
    809,321.70/1,213,982.55 = 659,730.90/x
  3. Step 3: Cross multiply
    809,321.70x = 1,213,982.55 × 659,730.90
  4. Step 4: Simplify right side
    809,321.70x = 800,901,800,295.80
  5. Step 5: Solve for x
    x = 800,901,800,295.80/809,321.70
  6. Step 6: Final answer
    x = 989,596.35

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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.