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Finding the Fourth Proportional to 8,394,625.70, 12,591,938.55 and 7,722,779.30

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Solution

The fourth proportional to 8,394,625.70, 12,591,938.55 and 7,722,779.30 is: 11,584,168.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,394,625.70 : 12,591,938.55 = 7,722,779.30 : x
  2. Step 2: Convert to fraction form
    8,394,625.70/12,591,938.55 = 7,722,779.30/x
  3. Step 3: Cross multiply
    8,394,625.70x = 12,591,938.55 × 7,722,779.30
  4. Step 4: Simplify right side
    8,394,625.70x = 97,244,762,380,812.02
  5. Step 5: Solve for x
    x = 97,244,762,380,812.02/8,394,625.70
  6. Step 6: Final answer
    x = 11,584,168.95

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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.