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Finding the Fourth Proportional to 8,393,649.60, 12,609,136.80 and 8,076,388.80

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Solution

The fourth proportional to 8,393,649.60, 12,609,136.80 and 8,076,388.80 is: 12,132,540.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,393,649.60 : 12,609,136.80 = 8,076,388.80 : x
  2. Step 2: Convert to fraction form
    8,393,649.60/12,609,136.80 = 8,076,388.80/x
  3. Step 3: Cross multiply
    8,393,649.60x = 12,609,136.80 × 8,076,388.80
  4. Step 4: Simplify right side
    8,393,649.60x = 101,836,291,229,187.84
  5. Step 5: Solve for x
    x = 101,836,291,229,187.84/8,393,649.60
  6. Step 6: Final answer
    x = 12,132,540.20

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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.