Home / 858,806.40-1,288,209.60-809,817.60

Finding the Fourth Proportional to 858,806.40, 1,288,209.60 and 809,817.60

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Solution

The fourth proportional to 858,806.40, 1,288,209.60 and 809,817.60 is: 1,214,726.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,806.40 : 1,288,209.60 = 809,817.60 : x
  2. Step 2: Convert to fraction form
    858,806.40/1,288,209.60 = 809,817.60/x
  3. Step 3: Cross multiply
    858,806.40x = 1,288,209.60 × 809,817.60
  4. Step 4: Simplify right side
    858,806.40x = 1,043,214,806,568.96
  5. Step 5: Solve for x
    x = 1,043,214,806,568.96/858,806.40
  6. Step 6: Final answer
    x = 1,214,726.40

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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.