Home / 821,877.60-1,233,010.80-260,912.10

Finding the Fourth Proportional to 821,877.60, 1,233,010.80 and 260,912.10

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Solution

The fourth proportional to 821,877.60, 1,233,010.80 and 260,912.10 is: 391,429.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,877.60 : 1,233,010.80 = 260,912.10 : x
  2. Step 2: Convert to fraction form
    821,877.60/1,233,010.80 = 260,912.10/x
  3. Step 3: Cross multiply
    821,877.60x = 1,233,010.80 × 260,912.10
  4. Step 4: Simplify right side
    821,877.60x = 321,707,437,150.68
  5. Step 5: Solve for x
    x = 321,707,437,150.68/821,877.60
  6. Step 6: Final answer
    x = 391,429.86

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1.5x scale

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.