Home / 1,211,801.88-1,672,210.54-667,907.72

Finding the Fourth Proportional to 1,211,801.88, 1,672,210.54 and 667,907.72

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Solution

The fourth proportional to 1,211,801.88, 1,672,210.54 and 667,907.72 is: 921,670.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,801.88 : 1,672,210.54 = 667,907.72 : x
  2. Step 2: Convert to fraction form
    1,211,801.88/1,672,210.54 = 667,907.72/x
  3. Step 3: Cross multiply
    1,211,801.88x = 1,672,210.54 × 667,907.72
  4. Step 4: Simplify right side
    1,211,801.88x = 1,116,882,329,131.37
  5. Step 5: Solve for x
    x = 1,116,882,329,131.37/1,211,801.88
  6. Step 6: Final answer
    x = 921,670.73

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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.