Home / 821,128.63-1,231,956.92-394,695.41

Finding the Fourth Proportional to 821,128.63, 1,231,956.92 and 394,695.41

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Solution

The fourth proportional to 821,128.63, 1,231,956.92 and 394,695.41 is: 592,170.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,128.63 : 1,231,956.92 = 394,695.41 : x
  2. Step 2: Convert to fraction form
    821,128.63/1,231,956.92 = 394,695.41/x
  3. Step 3: Cross multiply
    821,128.63x = 1,231,956.92 × 394,695.41
  4. Step 4: Simplify right side
    821,128.63x = 486,247,738,823.49
  5. Step 5: Solve for x
    x = 486,247,738,823.49/821,128.63
  6. Step 6: Final answer
    x = 592,170.00

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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.