Home / 821,105.04-1,231,921.01-394,671.81

Finding the Fourth Proportional to 821,105.04, 1,231,921.01 and 394,671.81

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Solution

The fourth proportional to 821,105.04, 1,231,921.01 and 394,671.81 is: 592,134.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,105.04 : 1,231,921.01 = 394,671.81 : x
  2. Step 2: Convert to fraction form
    821,105.04/1,231,921.01 = 394,671.81/x
  3. Step 3: Cross multiply
    821,105.04x = 1,231,921.01 × 394,671.81
  4. Step 4: Simplify right side
    821,105.04x = 486,204,495,780.41
  5. Step 5: Solve for x
    x = 486,204,495,780.41/821,105.04
  6. Step 6: Final answer
    x = 592,134.35

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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.