Home / 821,190.60-1,231,567.20-252,570.60

Finding the Fourth Proportional to 821,190.60, 1,231,567.20 and 252,570.60

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Solution

The fourth proportional to 821,190.60, 1,231,567.20 and 252,570.60 is: 378,788.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,190.60 : 1,231,567.20 = 252,570.60 : x
  2. Step 2: Convert to fraction form
    821,190.60/1,231,567.20 = 252,570.60/x
  3. Step 3: Cross multiply
    821,190.60x = 1,231,567.20 × 252,570.60
  4. Step 4: Simplify right side
    821,190.60x = 311,057,666,644.32
  5. Step 5: Solve for x
    x = 311,057,666,644.32/821,190.60
  6. Step 6: Final answer
    x = 378,788.64

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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.