Home / 820,327.60-1,230,491.40-809,268.40

Finding the Fourth Proportional to 820,327.60, 1,230,491.40 and 809,268.40

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Solution

The fourth proportional to 820,327.60, 1,230,491.40 and 809,268.40 is: 1,213,902.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,327.60 : 1,230,491.40 = 809,268.40 : x
  2. Step 2: Convert to fraction form
    820,327.60/1,230,491.40 = 809,268.40/x
  3. Step 3: Cross multiply
    820,327.60x = 1,230,491.40 × 809,268.40
  4. Step 4: Simplify right side
    820,327.60x = 995,797,806,491.76
  5. Step 5: Solve for x
    x = 995,797,806,491.76/820,327.60
  6. Step 6: Final answer
    x = 1,213,902.60

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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.