Home / 1,388,764.68-2,083,147.02-1,317,847.56

Finding the Fourth Proportional to 1,388,764.68, 2,083,147.02 and 1,317,847.56

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Solution

The fourth proportional to 1,388,764.68, 2,083,147.02 and 1,317,847.56 is: 1,976,771.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,764.68 : 2,083,147.02 = 1,317,847.56 : x
  2. Step 2: Convert to fraction form
    1,388,764.68/2,083,147.02 = 1,317,847.56/x
  3. Step 3: Cross multiply
    1,388,764.68x = 2,083,147.02 × 1,317,847.56
  4. Step 4: Simplify right side
    1,388,764.68x = 2,745,270,217,428.27
  5. Step 5: Solve for x
    x = 2,745,270,217,428.27/1,388,764.68
  6. Step 6: Final answer
    x = 1,976,771.34

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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.