Home / 2,658,843.39-3,987,428.55-861,309.81

Finding the Fourth Proportional to 2,658,843.39, 3,987,428.55 and 861,309.81

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Solution

The fourth proportional to 2,658,843.39, 3,987,428.55 and 861,309.81 is: 1,291,693.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,658,843.39 : 3,987,428.55 = 861,309.81 : x
  2. Step 2: Convert to fraction form
    2,658,843.39/3,987,428.55 = 861,309.81/x
  3. Step 3: Cross multiply
    2,658,843.39x = 3,987,428.55 × 861,309.81
  4. Step 4: Simplify right side
    2,658,843.39x = 3,434,411,326,789.08
  5. Step 5: Solve for x
    x = 3,434,411,326,789.08/2,658,843.39
  6. Step 6: Final answer
    x = 1,291,693.73

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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.