Home / 821,945.60-1,232,140.80-485,244.80

Finding the Fourth Proportional to 821,945.60, 1,232,140.80 and 485,244.80

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Solution

The fourth proportional to 821,945.60, 1,232,140.80 and 485,244.80 is: 727,408.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,945.60 : 1,232,140.80 = 485,244.80 : x
  2. Step 2: Convert to fraction form
    821,945.60/1,232,140.80 = 485,244.80/x
  3. Step 3: Cross multiply
    821,945.60x = 1,232,140.80 × 485,244.80
  4. Step 4: Simplify right side
    821,945.60x = 597,889,916,067.84
  5. Step 5: Solve for x
    x = 597,889,916,067.84/821,945.60
  6. Step 6: Final answer
    x = 727,408.14

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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.