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Finding the Fourth Proportional to 3,990,451.68, 5,986,563.12 and 1,150,342.20

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Solution

The fourth proportional to 3,990,451.68, 5,986,563.12 and 1,150,342.20 is: 1,725,768.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990,451.68 : 5,986,563.12 = 1,150,342.20 : x
  2. Step 2: Convert to fraction form
    3,990,451.68/5,986,563.12 = 1,150,342.20/x
  3. Step 3: Cross multiply
    3,990,451.68x = 5,986,563.12 × 1,150,342.20
  4. Step 4: Simplify right side
    3,990,451.68x = 6,886,596,189,899.66
  5. Step 5: Solve for x
    x = 6,886,596,189,899.66/3,990,451.68
  6. Step 6: Final answer
    x = 1,725,768.60

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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.