Home / 1,211,651.89-1,672,011.38-667,786.01

Finding the Fourth Proportional to 1,211,651.89, 1,672,011.38 and 667,786.01

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Solution

The fourth proportional to 1,211,651.89, 1,672,011.38 and 667,786.01 is: 921,507.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,651.89 : 1,672,011.38 = 667,786.01 : x
  2. Step 2: Convert to fraction form
    1,211,651.89/1,672,011.38 = 667,786.01/x
  3. Step 3: Cross multiply
    1,211,651.89x = 1,672,011.38 × 667,786.01
  4. Step 4: Simplify right side
    1,211,651.89x = 1,116,545,801,434.20
  5. Step 5: Solve for x
    x = 1,116,545,801,434.20/1,211,651.89
  6. Step 6: Final answer
    x = 921,507.09

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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.