Home / 1,115,078.39-1,538,809.55-605,780.77

Finding the Fourth Proportional to 1,115,078.39, 1,538,809.55 and 605,780.77

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Solution

The fourth proportional to 1,115,078.39, 1,538,809.55 and 605,780.77 is: 835,978.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115,078.39 : 1,538,809.55 = 605,780.77 : x
  2. Step 2: Convert to fraction form
    1,115,078.39/1,538,809.55 = 605,780.77/x
  3. Step 3: Cross multiply
    1,115,078.39x = 1,538,809.55 × 605,780.77
  4. Step 4: Simplify right side
    1,115,078.39x = 932,181,227,206.43
  5. Step 5: Solve for x
    x = 932,181,227,206.43/1,115,078.39
  6. Step 6: Final answer
    x = 835,978.20

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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.