Home / 1,115,162.09-1,538,934.52-631,716.90

Finding the Fourth Proportional to 1,115,162.09, 1,538,934.52 and 631,716.90

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Solution

The fourth proportional to 1,115,162.09, 1,538,934.52 and 631,716.90 is: 871,775.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115,162.09 : 1,538,934.52 = 631,716.90 : x
  2. Step 2: Convert to fraction form
    1,115,162.09/1,538,934.52 = 631,716.90/x
  3. Step 3: Cross multiply
    1,115,162.09x = 1,538,934.52 × 631,716.90
  4. Step 4: Simplify right side
    1,115,162.09x = 972,170,944,277.39
  5. Step 5: Solve for x
    x = 972,170,944,277.39/1,115,162.09
  6. Step 6: Final answer
    x = 871,775.46

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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.