Home / 1,121,905.91-1,558,681.79-1,108,453.82

Finding the Fourth Proportional to 1,121,905.91, 1,558,681.79 and 1,108,453.82

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Solution

The fourth proportional to 1,121,905.91, 1,558,681.79 and 1,108,453.82 is: 1,539,992.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,905.91 : 1,558,681.79 = 1,108,453.82 : x
  2. Step 2: Convert to fraction form
    1,121,905.91/1,558,681.79 = 1,108,453.82/x
  3. Step 3: Cross multiply
    1,121,905.91x = 1,558,681.79 × 1,108,453.82
  4. Step 4: Simplify right side
    1,121,905.91x = 1,727,726,770,954.26
  5. Step 5: Solve for x
    x = 1,727,726,770,954.26/1,121,905.91
  6. Step 6: Final answer
    x = 1,539,992.57

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.