Home / 1,206,971.40-1,812,040.24-809,391.80

Finding the Fourth Proportional to 1,206,971.40, 1,812,040.24 and 809,391.80

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Solution

The fourth proportional to 1,206,971.40, 1,812,040.24 and 809,391.80 is: 1,215,149.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,206,971.40 : 1,812,040.24 = 809,391.80 : x
  2. Step 2: Convert to fraction form
    1,206,971.40/1,812,040.24 = 809,391.80/x
  3. Step 3: Cross multiply
    1,206,971.40x = 1,812,040.24 × 809,391.80
  4. Step 4: Simplify right side
    1,206,971.40x = 1,466,650,511,526.03
  5. Step 5: Solve for x
    x = 1,466,650,511,526.03/1,206,971.40
  6. Step 6: Final answer
    x = 1,215,149.35

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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.