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Finding the Fourth Proportional to 866,793.90, 1,299,672.45 and 446,889.90

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Solution

The fourth proportional to 866,793.90, 1,299,672.45 and 446,889.90 is: 670,067.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,793.90 : 1,299,672.45 = 446,889.90 : x
  2. Step 2: Convert to fraction form
    866,793.90/1,299,672.45 = 446,889.90/x
  3. Step 3: Cross multiply
    866,793.90x = 1,299,672.45 × 446,889.90
  4. Step 4: Simplify right side
    866,793.90x = 580,810,491,213.26
  5. Step 5: Solve for x
    x = 580,810,491,213.26/866,793.90
  6. Step 6: Final answer
    x = 670,067.58

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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.