Home / 1,422,128.97-1,962,524.57-777,542.31

Finding the Fourth Proportional to 1,422,128.97, 1,962,524.57 and 777,542.31

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Solution

The fourth proportional to 1,422,128.97, 1,962,524.57 and 777,542.31 is: 1,073,001.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,422,128.97 : 1,962,524.57 = 777,542.31 : x
  2. Step 2: Convert to fraction form
    1,422,128.97/1,962,524.57 = 777,542.31/x
  3. Step 3: Cross multiply
    1,422,128.97x = 1,962,524.57 × 777,542.31
  4. Step 4: Simplify right side
    1,422,128.97x = 1,525,945,883,701.85
  5. Step 5: Solve for x
    x = 1,525,945,883,701.85/1,422,128.97
  6. Step 6: Final answer
    x = 1,073,001.05

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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.