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Finding the Fourth Proportional to 843,321.60, 1,264,982.40 and 805,996.80

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Solution

The fourth proportional to 843,321.60, 1,264,982.40 and 805,996.80 is: 1,208,995.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    843,321.60 : 1,264,982.40 = 805,996.80 : x
  2. Step 2: Convert to fraction form
    843,321.60/1,264,982.40 = 805,996.80/x
  3. Step 3: Cross multiply
    843,321.60x = 1,264,982.40 × 805,996.80
  4. Step 4: Simplify right side
    843,321.60x = 1,019,571,766,456.32
  5. Step 5: Solve for x
    x = 1,019,571,766,456.32/843,321.60
  6. Step 6: Final answer
    x = 1,208,995.20

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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.