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Finding the Fourth Proportional to 8,761,978.36, 13,144,212.78 and 2,697,214.60

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Solution

The fourth proportional to 8,761,978.36, 13,144,212.78 and 2,697,214.60 is: 4,046,205.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,761,978.36 : 13,144,212.78 = 2,697,214.60 : x
  2. Step 2: Convert to fraction form
    8,761,978.36/13,144,212.78 = 2,697,214.60/x
  3. Step 3: Cross multiply
    8,761,978.36x = 13,144,212.78 × 2,697,214.60
  4. Step 4: Simplify right side
    8,761,978.36x = 35,452,762,615,722.59
  5. Step 5: Solve for x
    x = 35,452,762,615,722.59/8,761,978.36
  6. Step 6: Final answer
    x = 4,046,205.22

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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.