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Finding the Fourth Proportional to 1,295,197.20, 1,942,795.80 and 822,805.20

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Solution

The fourth proportional to 1,295,197.20, 1,942,795.80 and 822,805.20 is: 1,234,207.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,295,197.20 : 1,942,795.80 = 822,805.20 : x
  2. Step 2: Convert to fraction form
    1,295,197.20/1,942,795.80 = 822,805.20/x
  3. Step 3: Cross multiply
    1,295,197.20x = 1,942,795.80 × 822,805.20
  4. Step 4: Simplify right side
    1,295,197.20x = 1,598,542,486,778.16
  5. Step 5: Solve for x
    x = 1,598,542,486,778.16/1,295,197.20
  6. Step 6: Final answer
    x = 1,234,207.80

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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.