Home / 1,427,424.80-1,969,843.20-823,812.80

Finding the Fourth Proportional to 1,427,424.80, 1,969,843.20 and 823,812.80

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Solution

The fourth proportional to 1,427,424.80, 1,969,843.20 and 823,812.80 is: 1,136,859.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,427,424.80 : 1,969,843.20 = 823,812.80 : x
  2. Step 2: Convert to fraction form
    1,427,424.80/1,969,843.20 = 823,812.80/x
  3. Step 3: Cross multiply
    1,427,424.80x = 1,969,843.20 × 823,812.80
  4. Step 4: Simplify right side
    1,427,424.80x = 1,622,782,042,152.96
  5. Step 5: Solve for x
    x = 1,622,782,042,152.96/1,427,424.80
  6. Step 6: Final answer
    x = 1,136,859.92

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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.