Home / 2,121,531.21-3,177,231.53-1,221,080.22

Finding the Fourth Proportional to 2,121,531.21, 3,177,231.53 and 1,221,080.22

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Solution

The fourth proportional to 2,121,531.21, 3,177,231.53 and 1,221,080.22 is: 1,828,704.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121,531.21 : 3,177,231.53 = 1,221,080.22 : x
  2. Step 2: Convert to fraction form
    2,121,531.21/3,177,231.53 = 1,221,080.22/x
  3. Step 3: Cross multiply
    2,121,531.21x = 3,177,231.53 × 1,221,080.22
  4. Step 4: Simplify right side
    2,121,531.21x = 3,879,654,569,537.94
  5. Step 5: Solve for x
    x = 3,879,654,569,537.94/2,121,531.21
  6. Step 6: Final answer
    x = 1,828,704.92

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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.