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Finding the Fourth Proportional to 404,330.40, 605,426.40 and 323,994.60

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Solution

The fourth proportional to 404,330.40, 605,426.40 and 323,994.60 is: 485,135.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,330.40 : 605,426.40 = 323,994.60 : x
  2. Step 2: Convert to fraction form
    404,330.40/605,426.40 = 323,994.60/x
  3. Step 3: Cross multiply
    404,330.40x = 605,426.40 × 323,994.60
  4. Step 4: Simplify right side
    404,330.40x = 196,154,884,297.44
  5. Step 5: Solve for x
    x = 196,154,884,297.44/404,330.40
  6. Step 6: Final answer
    x = 485,135.14

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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.