Home / 1,211,807.38-1,672,305.30-667,964.02

Finding the Fourth Proportional to 1,211,807.38, 1,672,305.30 and 667,964.02

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Solution

The fourth proportional to 1,211,807.38, 1,672,305.30 and 667,964.02 is: 921,796.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,807.38 : 1,672,305.30 = 667,964.02 : x
  2. Step 2: Convert to fraction form
    1,211,807.38/1,672,305.30 = 667,964.02/x
  3. Step 3: Cross multiply
    1,211,807.38x = 1,672,305.30 × 667,964.02
  4. Step 4: Simplify right side
    1,211,807.38x = 1,117,039,770,855.31
  5. Step 5: Solve for x
    x = 1,117,039,770,855.31/1,211,807.38
  6. Step 6: Final answer
    x = 921,796.47

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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.