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Finding the Fourth Proportional to 1,099,244.80, 1,648,867.20 and 990,769.60

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Solution

The fourth proportional to 1,099,244.80, 1,648,867.20 and 990,769.60 is: 1,486,154.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,099,244.80 : 1,648,867.20 = 990,769.60 : x
  2. Step 2: Convert to fraction form
    1,099,244.80/1,648,867.20 = 990,769.60/x
  3. Step 3: Cross multiply
    1,099,244.80x = 1,648,867.20 × 990,769.60
  4. Step 4: Simplify right side
    1,099,244.80x = 1,633,647,496,197.12
  5. Step 5: Solve for x
    x = 1,633,647,496,197.12/1,099,244.80
  6. Step 6: Final answer
    x = 1,486,154.40

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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.