Home / 821,243.60-1,231,750.20-260,334.80

Finding the Fourth Proportional to 821,243.60, 1,231,750.20 and 260,334.80

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Solution

The fourth proportional to 821,243.60, 1,231,750.20 and 260,334.80 is: 390,465.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,243.60 : 1,231,750.20 = 260,334.80 : x
  2. Step 2: Convert to fraction form
    821,243.60/1,231,750.20 = 260,334.80/x
  3. Step 3: Cross multiply
    821,243.60x = 1,231,750.20 × 260,334.80
  4. Step 4: Simplify right side
    821,243.60x = 320,667,441,966.96
  5. Step 5: Solve for x
    x = 320,667,441,966.96/821,243.60
  6. Step 6: Final answer
    x = 390,465.68

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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.