Home / 1,343,380.70-2,012,446.65-809,315.30

Finding the Fourth Proportional to 1,343,380.70, 2,012,446.65 and 809,315.30

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Solution

The fourth proportional to 1,343,380.70, 2,012,446.65 and 809,315.30 is: 1,212,391.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,343,380.70 : 2,012,446.65 = 809,315.30 : x
  2. Step 2: Convert to fraction form
    1,343,380.70/2,012,446.65 = 809,315.30/x
  3. Step 3: Cross multiply
    1,343,380.70x = 2,012,446.65 × 809,315.30
  4. Step 4: Simplify right side
    1,343,380.70x = 1,628,703,864,278.75
  5. Step 5: Solve for x
    x = 1,628,703,864,278.75/1,343,380.70
  6. Step 6: Final answer
    x = 1,212,391.89

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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.