Home / 1,297,206.50-1,790,891.81-862,213.55

Finding the Fourth Proportional to 1,297,206.50, 1,790,891.81 and 862,213.55

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Solution

The fourth proportional to 1,297,206.50, 1,790,891.81 and 862,213.55 is: 1,190,351.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,297,206.50 : 1,790,891.81 = 862,213.55 : x
  2. Step 2: Convert to fraction form
    1,297,206.50/1,790,891.81 = 862,213.55/x
  3. Step 3: Cross multiply
    1,297,206.50x = 1,790,891.81 × 862,213.55
  4. Step 4: Simplify right side
    1,297,206.50x = 1,544,131,175,133.80
  5. Step 5: Solve for x
    x = 1,544,131,175,133.80/1,297,206.50
  6. Step 6: Final answer
    x = 1,190,351.10

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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.