Home / 1,211,638.38-1,671,992.87-667,772.52

Finding the Fourth Proportional to 1,211,638.38, 1,671,992.87 and 667,772.52

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Solution

The fourth proportional to 1,211,638.38, 1,671,992.87 and 667,772.52 is: 921,488.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,638.38 : 1,671,992.87 = 667,772.52 : x
  2. Step 2: Convert to fraction form
    1,211,638.38/1,671,992.87 = 667,772.52/x
  3. Step 3: Cross multiply
    1,211,638.38x = 1,671,992.87 × 667,772.52
  4. Step 4: Simplify right side
    1,211,638.38x = 1,116,510,888,883.07
  5. Step 5: Solve for x
    x = 1,116,510,888,883.07/1,211,638.38
  6. Step 6: Final answer
    x = 921,488.55

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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.