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Finding the Fourth Proportional to 8,858,978.70, 13,288,468.05 and 7,583,520.30

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Solution

The fourth proportional to 8,858,978.70, 13,288,468.05 and 7,583,520.30 is: 11,375,280.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,858,978.70 : 13,288,468.05 = 7,583,520.30 : x
  2. Step 2: Convert to fraction form
    8,858,978.70/13,288,468.05 = 7,583,520.30/x
  3. Step 3: Cross multiply
    8,858,978.70x = 13,288,468.05 × 7,583,520.30
  4. Step 4: Simplify right side
    8,858,978.70x = 100,773,367,213,076.42
  5. Step 5: Solve for x
    x = 100,773,367,213,076.42/8,858,978.70
  6. Step 6: Final answer
    x = 11,375,280.45

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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.