Home / 1,331,801.79-1,837,893.56-728,189.79

Finding the Fourth Proportional to 1,331,801.79, 1,837,893.56 and 728,189.79

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Solution

The fourth proportional to 1,331,801.79, 1,837,893.56 and 728,189.79 is: 1,004,905.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331,801.79 : 1,837,893.56 = 728,189.79 : x
  2. Step 2: Convert to fraction form
    1,331,801.79/1,837,893.56 = 728,189.79/x
  3. Step 3: Cross multiply
    1,331,801.79x = 1,837,893.56 × 728,189.79
  4. Step 4: Simplify right side
    1,331,801.79x = 1,338,335,321,857.80
  5. Step 5: Solve for x
    x = 1,338,335,321,857.80/1,331,801.79
  6. Step 6: Final answer
    x = 1,004,905.78

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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.