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Finding the Fourth Proportional to 7,948,658.80, 11,924,543.40 and 3,399,698.80

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Solution

The fourth proportional to 7,948,658.80, 11,924,543.40 and 3,399,698.80 is: 5,100,213.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,948,658.80 : 11,924,543.40 = 3,399,698.80 : x
  2. Step 2: Convert to fraction form
    7,948,658.80/11,924,543.40 = 3,399,698.80/x
  3. Step 3: Cross multiply
    7,948,658.80x = 11,924,543.40 × 3,399,698.80
  4. Step 4: Simplify right side
    7,948,658.80x = 40,539,855,887,527.92
  5. Step 5: Solve for x
    x = 40,539,855,887,527.92/7,948,658.80
  6. Step 6: Final answer
    x = 5,100,213.37

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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.