Home / 1,211,798.39-1,672,205.72-667,904.24

Finding the Fourth Proportional to 1,211,798.39, 1,672,205.72 and 667,904.24

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Solution

The fourth proportional to 1,211,798.39, 1,672,205.72 and 667,904.24 is: 921,665.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,798.39 : 1,672,205.72 = 667,904.24 : x
  2. Step 2: Convert to fraction form
    1,211,798.39/1,672,205.72 = 667,904.24/x
  3. Step 3: Cross multiply
    1,211,798.39x = 1,672,205.72 × 667,904.24
  4. Step 4: Simplify right side
    1,211,798.39x = 1,116,873,278,839.70
  5. Step 5: Solve for x
    x = 1,116,873,278,839.70/1,211,798.39
  6. Step 6: Final answer
    x = 921,665.92

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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.