Home / 1,213,144.20-1,821,684.60-681,703.20

Finding the Fourth Proportional to 1,213,144.20, 1,821,684.60 and 681,703.20

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Solution

The fourth proportional to 1,213,144.20, 1,821,684.60 and 681,703.20 is: 1,023,660.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213,144.20 : 1,821,684.60 = 681,703.20 : x
  2. Step 2: Convert to fraction form
    1,213,144.20/1,821,684.60 = 681,703.20/x
  3. Step 3: Cross multiply
    1,213,144.20x = 1,821,684.60 × 681,703.20
  4. Step 4: Simplify right side
    1,213,144.20x = 1,241,848,221,210.72
  5. Step 5: Solve for x
    x = 1,241,848,221,210.72/1,213,144.20
  6. Step 6: Final answer
    x = 1,023,660.85

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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.