Home / 1,388,340.26-2,081,984.78-756,910.34

Finding the Fourth Proportional to 1,388,340.26, 2,081,984.78 and 756,910.34

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Solution

The fourth proportional to 1,388,340.26, 2,081,984.78 and 756,910.34 is: 1,135,078.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,388,340.26 : 2,081,984.78 = 756,910.34 : x
  2. Step 2: Convert to fraction form
    1,388,340.26/2,081,984.78 = 756,910.34/x
  3. Step 3: Cross multiply
    1,388,340.26x = 2,081,984.78 × 756,910.34
  4. Step 4: Simplify right side
    1,388,340.26x = 1,575,875,807,704.63
  5. Step 5: Solve for x
    x = 1,575,875,807,704.63/1,388,340.26
  6. Step 6: Final answer
    x = 1,135,078.95

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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.