Home / 892,716.78-1,339,148.06-419,143.80

Finding the Fourth Proportional to 892,716.78, 1,339,148.06 and 419,143.80

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Solution

The fourth proportional to 892,716.78, 1,339,148.06 and 419,143.80 is: 628,749.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    892,716.78 : 1,339,148.06 = 419,143.80 : x
  2. Step 2: Convert to fraction form
    892,716.78/1,339,148.06 = 419,143.80/x
  3. Step 3: Cross multiply
    892,716.78x = 1,339,148.06 × 419,143.80
  4. Step 4: Simplify right side
    892,716.78x = 561,295,606,631.03
  5. Step 5: Solve for x
    x = 561,295,606,631.03/892,716.78
  6. Step 6: Final answer
    x = 628,749.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.