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Finding the Fourth Proportional to 809,909.40, 1,214,864.10 and 798,099.60

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Solution

The fourth proportional to 809,909.40, 1,214,864.10 and 798,099.60 is: 1,197,149.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,909.40 : 1,214,864.10 = 798,099.60 : x
  2. Step 2: Convert to fraction form
    809,909.40/1,214,864.10 = 798,099.60/x
  3. Step 3: Cross multiply
    809,909.40x = 1,214,864.10 × 798,099.60
  4. Step 4: Simplify right side
    809,909.40x = 969,582,552,264.36
  5. Step 5: Solve for x
    x = 969,582,552,264.36/809,909.40
  6. Step 6: Final answer
    x = 1,197,149.40

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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.