Home / 820,257.60-1,230,386.40-809,198.40

Finding the Fourth Proportional to 820,257.60, 1,230,386.40 and 809,198.40

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Solution

The fourth proportional to 820,257.60, 1,230,386.40 and 809,198.40 is: 1,213,797.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,257.60 : 1,230,386.40 = 809,198.40 : x
  2. Step 2: Convert to fraction form
    820,257.60/1,230,386.40 = 809,198.40/x
  3. Step 3: Cross multiply
    820,257.60x = 1,230,386.40 × 809,198.40
  4. Step 4: Simplify right side
    820,257.60x = 995,626,706,261.76
  5. Step 5: Solve for x
    x = 995,626,706,261.76/820,257.60
  6. Step 6: Final answer
    x = 1,213,797.60

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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.