Home / 1,211,554.35-1,671,956.05-667,709.87

Finding the Fourth Proportional to 1,211,554.35, 1,671,956.05 and 667,709.87

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Solution

The fourth proportional to 1,211,554.35, 1,671,956.05 and 667,709.87 is: 921,445.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,554.35 : 1,671,956.05 = 667,709.87 : x
  2. Step 2: Convert to fraction form
    1,211,554.35/1,671,956.05 = 667,709.87/x
  3. Step 3: Cross multiply
    1,211,554.35x = 1,671,956.05 × 667,709.87
  4. Step 4: Simplify right side
    1,211,554.35x = 1,116,381,556,791.21
  5. Step 5: Solve for x
    x = 1,116,381,556,791.21/1,211,554.35
  6. Step 6: Final answer
    x = 921,445.71

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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.