Home / 858,984.20-1,288,476.30-764,505.80

Finding the Fourth Proportional to 858,984.20, 1,288,476.30 and 764,505.80

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Solution

The fourth proportional to 858,984.20, 1,288,476.30 and 764,505.80 is: 1,146,758.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,984.20 : 1,288,476.30 = 764,505.80 : x
  2. Step 2: Convert to fraction form
    858,984.20/1,288,476.30 = 764,505.80/x
  3. Step 3: Cross multiply
    858,984.20x = 1,288,476.30 × 764,505.80
  4. Step 4: Simplify right side
    858,984.20x = 985,047,604,512.54
  5. Step 5: Solve for x
    x = 985,047,604,512.54/858,984.20
  6. Step 6: Final answer
    x = 1,146,758.70

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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.