Home / 2,261,556.40-3,120,911.61-1,242,939.28

Finding the Fourth Proportional to 2,261,556.40, 3,120,911.61 and 1,242,939.28

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Solution

The fourth proportional to 2,261,556.40, 3,120,911.61 and 1,242,939.28 is: 1,715,236.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261,556.40 : 3,120,911.61 = 1,242,939.28 : x
  2. Step 2: Convert to fraction form
    2,261,556.40/3,120,911.61 = 1,242,939.28/x
  3. Step 3: Cross multiply
    2,261,556.40x = 3,120,911.61 × 1,242,939.28
  4. Step 4: Simplify right side
    2,261,556.40x = 3,879,103,629,477.04
  5. Step 5: Solve for x
    x = 3,879,103,629,477.04/2,261,556.40
  6. Step 6: Final answer
    x = 1,715,236.30

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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.