Home / 2,109,158.66-3,162,331.82-688,716.74

Finding the Fourth Proportional to 2,109,158.66, 3,162,331.82 and 688,716.74

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Solution

The fourth proportional to 2,109,158.66, 3,162,331.82 and 688,716.74 is: 1,032,615.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,109,158.66 : 3,162,331.82 = 688,716.74 : x
  2. Step 2: Convert to fraction form
    2,109,158.66/3,162,331.82 = 688,716.74/x
  3. Step 3: Cross multiply
    2,109,158.66x = 3,162,331.82 × 688,716.74
  4. Step 4: Simplify right side
    2,109,158.66x = 2,177,950,847,778.80
  5. Step 5: Solve for x
    x = 2,177,950,847,778.80/2,109,158.66
  6. Step 6: Final answer
    x = 1,032,615.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.