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Finding the Fourth Proportional to 393,998.60, 590,123.10 and 324,014.60

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Solution

The fourth proportional to 393,998.60, 590,123.10 and 324,014.60 is: 485,302.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,998.60 : 590,123.10 = 324,014.60 : x
  2. Step 2: Convert to fraction form
    393,998.60/590,123.10 = 324,014.60/x
  3. Step 3: Cross multiply
    393,998.60x = 590,123.10 × 324,014.60
  4. Step 4: Simplify right side
    393,998.60x = 191,208,500,197.26
  5. Step 5: Solve for x
    x = 191,208,500,197.26/393,998.60
  6. Step 6: Final answer
    x = 485,302.49

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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.