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Finding the Fourth Proportional to 647,781.37, 971,672.05 and 347,849.36

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Solution

The fourth proportional to 647,781.37, 971,672.05 and 347,849.36 is: 521,774.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,781.37 : 971,672.05 = 347,849.36 : x
  2. Step 2: Convert to fraction form
    647,781.37/971,672.05 = 347,849.36/x
  3. Step 3: Cross multiply
    647,781.37x = 971,672.05 × 347,849.36
  4. Step 4: Simplify right side
    647,781.37x = 337,995,497,627.21
  5. Step 5: Solve for x
    x = 337,995,497,627.21/647,781.37
  6. Step 6: Final answer
    x = 521,774.03

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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.