Home / 858,982.20-1,288,473.30-809,993.40

Finding the Fourth Proportional to 858,982.20, 1,288,473.30 and 809,993.40

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Solution

The fourth proportional to 858,982.20, 1,288,473.30 and 809,993.40 is: 1,214,990.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,982.20 : 1,288,473.30 = 809,993.40 : x
  2. Step 2: Convert to fraction form
    858,982.20/1,288,473.30 = 809,993.40/x
  3. Step 3: Cross multiply
    858,982.20x = 1,288,473.30 × 809,993.40
  4. Step 4: Simplify right side
    858,982.20x = 1,043,654,869,076.22
  5. Step 5: Solve for x
    x = 1,043,654,869,076.22/858,982.20
  6. Step 6: Final answer
    x = 1,214,990.10

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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.