Home / 858,896.40-1,288,344.60-809,907.60

Finding the Fourth Proportional to 858,896.40, 1,288,344.60 and 809,907.60

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Solution

The fourth proportional to 858,896.40, 1,288,344.60 and 809,907.60 is: 1,214,861.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,896.40 : 1,288,344.60 = 809,907.60 : x
  2. Step 2: Convert to fraction form
    858,896.40/1,288,344.60 = 809,907.60/x
  3. Step 3: Cross multiply
    858,896.40x = 1,288,344.60 × 809,907.60
  4. Step 4: Simplify right side
    858,896.40x = 1,043,440,082,958.96
  5. Step 5: Solve for x
    x = 1,043,440,082,958.96/858,896.40
  6. Step 6: Final answer
    x = 1,214,861.40

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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.