Home / 809,266.60-1,212,863.10-720,101.80

Finding the Fourth Proportional to 809,266.60, 1,212,863.10 and 720,101.80

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Solution

The fourth proportional to 809,266.60, 1,212,863.10 and 720,101.80 is: 1,079,230.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,266.60 : 1,212,863.10 = 720,101.80 : x
  2. Step 2: Convert to fraction form
    809,266.60/1,212,863.10 = 720,101.80/x
  3. Step 3: Cross multiply
    809,266.60x = 1,212,863.10 × 720,101.80
  4. Step 4: Simplify right side
    809,266.60x = 873,384,901,463.58
  5. Step 5: Solve for x
    x = 873,384,901,463.58/809,266.60
  6. Step 6: Final answer
    x = 1,079,230.13

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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.