Home / 1,320,136.42-1,821,739.53-716,511.46

Finding the Fourth Proportional to 1,320,136.42, 1,821,739.53 and 716,511.46

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Solution

The fourth proportional to 1,320,136.42, 1,821,739.53 and 716,511.46 is: 988,759.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,320,136.42 : 1,821,739.53 = 716,511.46 : x
  2. Step 2: Convert to fraction form
    1,320,136.42/1,821,739.53 = 716,511.46/x
  3. Step 3: Cross multiply
    1,320,136.42x = 1,821,739.53 × 716,511.46
  4. Step 4: Simplify right side
    1,320,136.42x = 1,305,297,250,380.01
  5. Step 5: Solve for x
    x = 1,305,297,250,380.01/1,320,136.42
  6. Step 6: Final answer
    x = 988,759.37

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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.