Home / 858,873.20-1,288,309.80-764,394.80

Finding the Fourth Proportional to 858,873.20, 1,288,309.80 and 764,394.80

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Solution

The fourth proportional to 858,873.20, 1,288,309.80 and 764,394.80 is: 1,146,592.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,873.20 : 1,288,309.80 = 764,394.80 : x
  2. Step 2: Convert to fraction form
    858,873.20/1,288,309.80 = 764,394.80/x
  3. Step 3: Cross multiply
    858,873.20x = 1,288,309.80 × 764,394.80
  4. Step 4: Simplify right side
    858,873.20x = 984,777,311,909.04
  5. Step 5: Solve for x
    x = 984,777,311,909.04/858,873.20
  6. Step 6: Final answer
    x = 1,146,592.20

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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.