Home / 1,238,021.68-1,856,956.08-439,198

Finding the Fourth Proportional to 1,238,021.68, 1,856,956.08 and 439,198

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Solution

The fourth proportional to 1,238,021.68, 1,856,956.08 and 439,198 is: 658,769.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,021.68 : 1,856,956.08 = 439,198 : x
  2. Step 2: Convert to fraction form
    1,238,021.68/1,856,956.08 = 439,198/x
  3. Step 3: Cross multiply
    1,238,021.68x = 1,856,956.08 × 439,198
  4. Step 4: Simplify right side
    1,238,021.68x = 815,571,396,423.84
  5. Step 5: Solve for x
    x = 815,571,396,423.84/1,238,021.68
  6. Step 6: Final answer
    x = 658,769.88

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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.