Home / 821,274.28-1,231,911.60-309,035.86

Finding the Fourth Proportional to 821,274.28, 1,231,911.60 and 309,035.86

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Solution

The fourth proportional to 821,274.28, 1,231,911.60 and 309,035.86 is: 463,553.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,274.28 : 1,231,911.60 = 309,035.86 : x
  2. Step 2: Convert to fraction form
    821,274.28/1,231,911.60 = 309,035.86/x
  3. Step 3: Cross multiply
    821,274.28x = 1,231,911.60 × 309,035.86
  4. Step 4: Simplify right side
    821,274.28x = 380,704,860,749.98
  5. Step 5: Solve for x
    x = 380,704,860,749.98/821,274.28
  6. Step 6: Final answer
    x = 463,553.86

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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.