Home / 386,676.21-579,939.17-194,499.45

Finding the Fourth Proportional to 386,676.21, 579,939.17 and 194,499.45

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Solution

The fourth proportional to 386,676.21, 579,939.17 and 194,499.45 is: 291,711.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,676.21 : 579,939.17 = 194,499.45 : x
  2. Step 2: Convert to fraction form
    386,676.21/579,939.17 = 194,499.45/x
  3. Step 3: Cross multiply
    386,676.21x = 579,939.17 × 194,499.45
  4. Step 4: Simplify right side
    386,676.21x = 112,797,848,625.96
  5. Step 5: Solve for x
    x = 112,797,848,625.96/386,676.21
  6. Step 6: Final answer
    x = 291,711.37

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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.