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Finding the Fourth Proportional to 821,672.40, 1,232,508.60 and 551,067.60

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Solution

The fourth proportional to 821,672.40, 1,232,508.60 and 551,067.60 is: 826,601.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,672.40 : 1,232,508.60 = 551,067.60 : x
  2. Step 2: Convert to fraction form
    821,672.40/1,232,508.60 = 551,067.60/x
  3. Step 3: Cross multiply
    821,672.40x = 1,232,508.60 × 551,067.60
  4. Step 4: Simplify right side
    821,672.40x = 679,195,556,181.36
  5. Step 5: Solve for x
    x = 679,195,556,181.36/821,672.40
  6. Step 6: Final answer
    x = 826,601.40

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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.