Home / 1,986,121.20-2,740,484.64-1,297,609.92

Finding the Fourth Proportional to 1,986,121.20, 2,740,484.64 and 1,297,609.92

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Solution

The fourth proportional to 1,986,121.20, 2,740,484.64 and 1,297,609.92 is: 1,790,464.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986,121.20 : 2,740,484.64 = 1,297,609.92 : x
  2. Step 2: Convert to fraction form
    1,986,121.20/2,740,484.64 = 1,297,609.92/x
  3. Step 3: Cross multiply
    1,986,121.20x = 2,740,484.64 × 1,297,609.92
  4. Step 4: Simplify right side
    1,986,121.20x = 3,556,080,054,471.63
  5. Step 5: Solve for x
    x = 3,556,080,054,471.63/1,986,121.20
  6. Step 6: Final answer
    x = 1,790,464.78

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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.