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Finding the Fourth Proportional to 842,493.60, 1,261,772.10 and 825,580.80

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Solution

The fourth proportional to 842,493.60, 1,261,772.10 and 825,580.80 is: 1,236,442.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,493.60 : 1,261,772.10 = 825,580.80 : x
  2. Step 2: Convert to fraction form
    842,493.60/1,261,772.10 = 825,580.80/x
  3. Step 3: Cross multiply
    842,493.60x = 1,261,772.10 × 825,580.80
  4. Step 4: Simplify right side
    842,493.60x = 1,041,694,819,735.68
  5. Step 5: Solve for x
    x = 1,041,694,819,735.68/842,493.60
  6. Step 6: Final answer
    x = 1,236,442.41

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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.