Home / 1,987,103.83-2,742,195.53-1,115,817.38

Finding the Fourth Proportional to 1,987,103.83, 2,742,195.53 and 1,115,817.38

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Solution

The fourth proportional to 1,987,103.83, 2,742,195.53 and 1,115,817.38 is: 1,539,823.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,987,103.83 : 2,742,195.53 = 1,115,817.38 : x
  2. Step 2: Convert to fraction form
    1,987,103.83/2,742,195.53 = 1,115,817.38/x
  3. Step 3: Cross multiply
    1,987,103.83x = 2,742,195.53 × 1,115,817.38
  4. Step 4: Simplify right side
    1,987,103.83x = 3,059,789,431,732.31
  5. Step 5: Solve for x
    x = 3,059,789,431,732.31/1,987,103.83
  6. Step 6: Final answer
    x = 1,539,823.63

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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.