Home / 1,211,389.42-1,671,791.72-667,524.88

Finding the Fourth Proportional to 1,211,389.42, 1,671,791.72 and 667,524.88

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Solution

The fourth proportional to 1,211,389.42, 1,671,791.72 and 667,524.88 is: 921,225.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,389.42 : 1,671,791.72 = 667,524.88 : x
  2. Step 2: Convert to fraction form
    1,211,389.42/1,671,791.72 = 667,524.88/x
  3. Step 3: Cross multiply
    1,211,389.42x = 1,671,791.72 × 667,524.88
  4. Step 4: Simplify right side
    1,211,389.42x = 1,115,962,567,277.99
  5. Step 5: Solve for x
    x = 1,115,962,567,277.99/1,211,389.42
  6. Step 6: Final answer
    x = 921,225.29

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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.