Home / 2,889,492.12-3,987,489.14-1,665,791.81

Finding the Fourth Proportional to 2,889,492.12, 3,987,489.14 and 1,665,791.81

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Solution

The fourth proportional to 2,889,492.12, 3,987,489.14 and 1,665,791.81 is: 2,298,786.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,889,492.12 : 3,987,489.14 = 1,665,791.81 : x
  2. Step 2: Convert to fraction form
    2,889,492.12/3,987,489.14 = 1,665,791.81/x
  3. Step 3: Cross multiply
    2,889,492.12x = 3,987,489.14 × 1,665,791.81
  4. Step 4: Simplify right side
    2,889,492.12x = 6,642,326,723,609.54
  5. Step 5: Solve for x
    x = 6,642,326,723,609.54/2,889,492.12
  6. Step 6: Final answer
    x = 2,298,786.93

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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.