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Finding the Fourth Proportional to 404,591.28, 556,837.92 and 296,990.88

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Solution

The fourth proportional to 404,591.28, 556,837.92 and 296,990.88 is: 408,747.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,591.28 : 556,837.92 = 296,990.88 : x
  2. Step 2: Convert to fraction form
    404,591.28/556,837.92 = 296,990.88/x
  3. Step 3: Cross multiply
    404,591.28x = 556,837.92 × 296,990.88
  4. Step 4: Simplify right side
    404,591.28x = 165,375,783,878.17
  5. Step 5: Solve for x
    x = 165,375,783,878.17/404,591.28
  6. Step 6: Final answer
    x = 408,747.77

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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.