Home / 386,576.64-579,726.05-133,788.56

Finding the Fourth Proportional to 386,576.64, 579,726.05 and 133,788.56

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Solution

The fourth proportional to 386,576.64, 579,726.05 and 133,788.56 is: 200,634.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,576.64 : 579,726.05 = 133,788.56 : x
  2. Step 2: Convert to fraction form
    386,576.64/579,726.05 = 133,788.56/x
  3. Step 3: Cross multiply
    386,576.64x = 579,726.05 × 133,788.56
  4. Step 4: Simplify right side
    386,576.64x = 77,560,709,856.42
  5. Step 5: Solve for x
    x = 77,560,709,856.42/386,576.64
  6. Step 6: Final answer
    x = 200,634.76

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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.