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Finding the Fourth Proportional to 552,837.58, 762,789.64 and 311,031.92

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Solution

The fourth proportional to 552,837.58, 762,789.64 and 311,031.92 is: 429,153.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,837.58 : 762,789.64 = 311,031.92 : x
  2. Step 2: Convert to fraction form
    552,837.58/762,789.64 = 311,031.92/x
  3. Step 3: Cross multiply
    552,837.58x = 762,789.64 × 311,031.92
  4. Step 4: Simplify right side
    552,837.58x = 237,251,927,414.70
  5. Step 5: Solve for x
    x = 237,251,927,414.70/552,837.58
  6. Step 6: Final answer
    x = 429,153.04

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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.