Home / 1,211,282.60-1,671,645.80-667,418.16

Finding the Fourth Proportional to 1,211,282.60, 1,671,645.80 and 667,418.16

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Solution

The fourth proportional to 1,211,282.60, 1,671,645.80 and 667,418.16 is: 921,078.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,282.60 : 1,671,645.80 = 667,418.16 : x
  2. Step 2: Convert to fraction form
    1,211,282.60/1,671,645.80 = 667,418.16/x
  3. Step 3: Cross multiply
    1,211,282.60x = 1,671,645.80 × 667,418.16
  4. Step 4: Simplify right side
    1,211,282.60x = 1,115,686,764,007.73
  5. Step 5: Solve for x
    x = 1,115,686,764,007.73/1,211,282.60
  6. Step 6: Final answer
    x = 921,078.83

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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.