Home / 1,427,392.80-1,969,799.04-823,780.80

Finding the Fourth Proportional to 1,427,392.80, 1,969,799.04 and 823,780.80

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Solution

The fourth proportional to 1,427,392.80, 1,969,799.04 and 823,780.80 is: 1,136,815.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,427,392.80 : 1,969,799.04 = 823,780.80 : x
  2. Step 2: Convert to fraction form
    1,427,392.80/1,969,799.04 = 823,780.80/x
  3. Step 3: Cross multiply
    1,427,392.80x = 1,969,799.04 × 823,780.80
  4. Step 4: Simplify right side
    1,427,392.80x = 1,622,682,629,010.43
  5. Step 5: Solve for x
    x = 1,622,682,629,010.43/1,427,392.80
  6. Step 6: Final answer
    x = 1,136,815.76

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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.