Home / 2,115,069.30-2,918,799.26-1,209,651.30

Finding the Fourth Proportional to 2,115,069.30, 2,918,799.26 and 1,209,651.30

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Solution

The fourth proportional to 2,115,069.30, 2,918,799.26 and 1,209,651.30 is: 1,669,320.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115,069.30 : 2,918,799.26 = 1,209,651.30 : x
  2. Step 2: Convert to fraction form
    2,115,069.30/2,918,799.26 = 1,209,651.30/x
  3. Step 3: Cross multiply
    2,115,069.30x = 2,918,799.26 × 1,209,651.30
  4. Step 4: Simplify right side
    2,115,069.30x = 3,530,729,313,249.78
  5. Step 5: Solve for x
    x = 3,530,729,313,249.78/2,115,069.30
  6. Step 6: Final answer
    x = 1,669,320.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.