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Finding the Fourth Proportional to 3,985,659.60, 5,978,489.40 and 1,460,986.80

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Solution

The fourth proportional to 3,985,659.60, 5,978,489.40 and 1,460,986.80 is: 2,191,480.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,985,659.60 : 5,978,489.40 = 1,460,986.80 : x
  2. Step 2: Convert to fraction form
    3,985,659.60/5,978,489.40 = 1,460,986.80/x
  3. Step 3: Cross multiply
    3,985,659.60x = 5,978,489.40 × 1,460,986.80
  4. Step 4: Simplify right side
    3,985,659.60x = 8,734,494,097,339.92
  5. Step 5: Solve for x
    x = 8,734,494,097,339.92/3,985,659.60
  6. Step 6: Final answer
    x = 2,191,480.20

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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.