Home / 1,428,480.97-1,971,327.78-783,961.13

Finding the Fourth Proportional to 1,428,480.97, 1,971,327.78 and 783,961.13

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Solution

The fourth proportional to 1,428,480.97, 1,971,327.78 and 783,961.13 is: 1,081,879.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,480.97 : 1,971,327.78 = 783,961.13 : x
  2. Step 2: Convert to fraction form
    1,428,480.97/1,971,327.78 = 783,961.13/x
  3. Step 3: Cross multiply
    1,428,480.97x = 1,971,327.78 × 783,961.13
  4. Step 4: Simplify right side
    1,428,480.97x = 1,545,444,358,937.51
  5. Step 5: Solve for x
    x = 1,545,444,358,937.51/1,428,480.97
  6. Step 6: Final answer
    x = 1,081,879.56

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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.