Home / 1,115,454.98-1,538,761.25-728,496.89

Finding the Fourth Proportional to 1,115,454.98, 1,538,761.25 and 728,496.89

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Solution

The fourth proportional to 1,115,454.98, 1,538,761.25 and 728,496.89 is: 1,004,955.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115,454.98 : 1,538,761.25 = 728,496.89 : x
  2. Step 2: Convert to fraction form
    1,115,454.98/1,538,761.25 = 728,496.89/x
  3. Step 3: Cross multiply
    1,115,454.98x = 1,538,761.25 × 728,496.89
  4. Step 4: Simplify right side
    1,115,454.98x = 1,120,982,784,975.30
  5. Step 5: Solve for x
    x = 1,120,982,784,975.30/1,115,454.98
  6. Step 6: Final answer
    x = 1,004,955.65

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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.