Home / 1,491,003.80-2,057,608.78-811,939.80

Finding the Fourth Proportional to 1,491,003.80, 2,057,608.78 and 811,939.80

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Solution

The fourth proportional to 1,491,003.80, 2,057,608.78 and 811,939.80 is: 1,120,489.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,491,003.80 : 2,057,608.78 = 811,939.80 : x
  2. Step 2: Convert to fraction form
    1,491,003.80/2,057,608.78 = 811,939.80/x
  3. Step 3: Cross multiply
    1,491,003.80x = 2,057,608.78 × 811,939.80
  4. Step 4: Simplify right side
    1,491,003.80x = 1,670,654,461,311.44
  5. Step 5: Solve for x
    x = 1,670,654,461,311.44/1,491,003.80
  6. Step 6: Final answer
    x = 1,120,489.74

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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.