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Finding the Fourth Proportional to 7,187,704.50, 9,919,170.32 and 3,924,648.56

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Solution

The fourth proportional to 7,187,704.50, 9,919,170.32 and 3,924,648.56 is: 5,416,090.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,187,704.50 : 9,919,170.32 = 3,924,648.56 : x
  2. Step 2: Convert to fraction form
    7,187,704.50/9,919,170.32 = 3,924,648.56/x
  3. Step 3: Cross multiply
    7,187,704.50x = 9,919,170.32 × 3,924,648.56
  4. Step 4: Simplify right side
    7,187,704.50x = 38,929,257,512,782.74
  5. Step 5: Solve for x
    x = 38,929,257,512,782.74/7,187,704.50
  6. Step 6: Final answer
    x = 5,416,090.42

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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.