Home / 821,657.60-1,230,736.80-664,193.60

Finding the Fourth Proportional to 821,657.60, 1,230,736.80 and 664,193.60

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Solution

The fourth proportional to 821,657.60, 1,230,736.80 and 664,193.60 is: 994,876.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,657.60 : 1,230,736.80 = 664,193.60 : x
  2. Step 2: Convert to fraction form
    821,657.60/1,230,736.80 = 664,193.60/x
  3. Step 3: Cross multiply
    821,657.60x = 1,230,736.80 × 664,193.60
  4. Step 4: Simplify right side
    821,657.60x = 817,447,505,844.48
  5. Step 5: Solve for x
    x = 817,447,505,844.48/821,657.60
  6. Step 6: Final answer
    x = 994,876.10

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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.