Home / 1,115,523.38-1,538,987.64-825,828.36

Finding the Fourth Proportional to 1,115,523.38, 1,538,987.64 and 825,828.36

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Solution

The fourth proportional to 1,115,523.38, 1,538,987.64 and 825,828.36 is: 1,139,321.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115,523.38 : 1,538,987.64 = 825,828.36 : x
  2. Step 2: Convert to fraction form
    1,115,523.38/1,538,987.64 = 825,828.36/x
  3. Step 3: Cross multiply
    1,115,523.38x = 1,538,987.64 × 825,828.36
  4. Step 4: Simplify right side
    1,115,523.38x = 1,270,939,638,801.47
  5. Step 5: Solve for x
    x = 1,270,939,638,801.47/1,115,523.38
  6. Step 6: Final answer
    x = 1,139,321.38

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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.