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Finding the Fourth Proportional to 3,986,999.60, 5,986,404.30 and 3,089,454.80

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Solution

The fourth proportional to 3,986,999.60, 5,986,404.30 and 3,089,454.80 is: 4,638,757.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986,999.60 : 5,986,404.30 = 3,089,454.80 : x
  2. Step 2: Convert to fraction form
    3,986,999.60/5,986,404.30 = 3,089,454.80/x
  3. Step 3: Cross multiply
    3,986,999.60x = 5,986,404.30 × 3,089,454.80
  4. Step 4: Simplify right side
    3,986,999.60x = 18,494,725,499,375.64
  5. Step 5: Solve for x
    x = 18,494,725,499,375.64/3,986,999.60
  6. Step 6: Final answer
    x = 4,638,757.80

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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.