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Finding the Fourth Proportional to 8,736,010.60, 13,104,404.70 and 2,978,660.20

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Solution

The fourth proportional to 8,736,010.60, 13,104,404.70 and 2,978,660.20 is: 4,468,122.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,736,010.60 : 13,104,404.70 = 2,978,660.20 : x
  2. Step 2: Convert to fraction form
    8,736,010.60/13,104,404.70 = 2,978,660.20/x
  3. Step 3: Cross multiply
    8,736,010.60x = 13,104,404.70 × 2,978,660.20
  4. Step 4: Simplify right side
    8,736,010.60x = 39,033,568,724,582.94
  5. Step 5: Solve for x
    x = 39,033,568,724,582.94/8,736,010.60
  6. Step 6: Final answer
    x = 4,468,122.87

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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.