Home / 1,115,456.49-1,538,763.32-728,498.39

Finding the Fourth Proportional to 1,115,456.49, 1,538,763.32 and 728,498.39

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Solution

The fourth proportional to 1,115,456.49, 1,538,763.32 and 728,498.39 is: 1,004,957.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115,456.49 : 1,538,763.32 = 728,498.39 : x
  2. Step 2: Convert to fraction form
    1,115,456.49/1,538,763.32 = 728,498.39/x
  3. Step 3: Cross multiply
    1,115,456.49x = 1,538,763.32 × 728,498.39
  4. Step 4: Simplify right side
    1,115,456.49x = 1,120,986,589,874.75
  5. Step 5: Solve for x
    x = 1,120,986,589,874.75/1,115,456.49
  6. Step 6: Final answer
    x = 1,004,957.70

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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.