Home / 1,388,555.68-2,082,833.52-1,317,638.56

Finding the Fourth Proportional to 1,388,555.68, 2,082,833.52 and 1,317,638.56

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Solution

The fourth proportional to 1,388,555.68, 2,082,833.52 and 1,317,638.56 is: 1,976,457.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,555.68 : 2,082,833.52 = 1,317,638.56 : x
  2. Step 2: Convert to fraction form
    1,388,555.68/2,082,833.52 = 1,317,638.56/x
  3. Step 3: Cross multiply
    1,388,555.68x = 2,082,833.52 × 1,317,638.56
  4. Step 4: Simplify right side
    1,388,555.68x = 2,744,421,760,012.53
  5. Step 5: Solve for x
    x = 2,744,421,760,012.53/1,388,555.68
  6. Step 6: Final answer
    x = 1,976,457.84

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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.