Home / 1,388,324.70-2,081,104.65-639,063.90

Finding the Fourth Proportional to 1,388,324.70, 2,081,104.65 and 639,063.90

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Solution

The fourth proportional to 1,388,324.70, 2,081,104.65 and 639,063.90 is: 957,959.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,324.70 : 2,081,104.65 = 639,063.90 : x
  2. Step 2: Convert to fraction form
    1,388,324.70/2,081,104.65 = 639,063.90/x
  3. Step 3: Cross multiply
    1,388,324.70x = 2,081,104.65 × 639,063.90
  4. Step 4: Simplify right side
    1,388,324.70x = 1,329,958,853,937.14
  5. Step 5: Solve for x
    x = 1,329,958,853,937.14/1,388,324.70
  6. Step 6: Final answer
    x = 957,959.51

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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.