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Finding the Fourth Proportional to 394,998.76, 591,120.06 and 323,090.20

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Solution

The fourth proportional to 394,998.76, 591,120.06 and 323,090.20 is: 483,508.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,998.76 : 591,120.06 = 323,090.20 : x
  2. Step 2: Convert to fraction form
    394,998.76/591,120.06 = 323,090.20/x
  3. Step 3: Cross multiply
    394,998.76x = 591,120.06 × 323,090.20
  4. Step 4: Simplify right side
    394,998.76x = 190,985,098,409.41
  5. Step 5: Solve for x
    x = 190,985,098,409.41/394,998.76
  6. Step 6: Final answer
    x = 483,508.10

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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.