Home / 2,190,618.36-3,022,945.38-1,223,556.12

Finding the Fourth Proportional to 2,190,618.36, 3,022,945.38 and 1,223,556.12

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Solution

The fourth proportional to 2,190,618.36, 3,022,945.38 and 1,223,556.12 is: 1,688,447.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190,618.36 : 3,022,945.38 = 1,223,556.12 : x
  2. Step 2: Convert to fraction form
    2,190,618.36/3,022,945.38 = 1,223,556.12/x
  3. Step 3: Cross multiply
    2,190,618.36x = 3,022,945.38 × 1,223,556.12
  4. Step 4: Simplify right side
    2,190,618.36x = 3,698,743,320,124.73
  5. Step 5: Solve for x
    x = 3,698,743,320,124.73/2,190,618.36
  6. Step 6: Final answer
    x = 1,688,447.15

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Double scale
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1.5x scale

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.