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Finding the Fourth Proportional to 5,990,808.40, 8,986,212.60 and 4,290,197.20

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Solution

The fourth proportional to 5,990,808.40, 8,986,212.60 and 4,290,197.20 is: 6,435,295.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,990,808.40 : 8,986,212.60 = 4,290,197.20 : x
  2. Step 2: Convert to fraction form
    5,990,808.40/8,986,212.60 = 4,290,197.20/x
  3. Step 3: Cross multiply
    5,990,808.40x = 8,986,212.60 × 4,290,197.20
  4. Step 4: Simplify right side
    5,990,808.40x = 38,552,624,135,124.72
  5. Step 5: Solve for x
    x = 38,552,624,135,124.72/5,990,808.40
  6. Step 6: Final answer
    x = 6,435,295.80

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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.