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Finding the Fourth Proportional to 404,659.60, 606,989.40 and 329,864.20

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Solution

The fourth proportional to 404,659.60, 606,989.40 and 329,864.20 is: 494,796.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,659.60 : 606,989.40 = 329,864.20 : x
  2. Step 2: Convert to fraction form
    404,659.60/606,989.40 = 329,864.20/x
  3. Step 3: Cross multiply
    404,659.60x = 606,989.40 × 329,864.20
  4. Step 4: Simplify right side
    404,659.60x = 200,224,072,839.48
  5. Step 5: Solve for x
    x = 200,224,072,839.48/404,659.60
  6. Step 6: Final answer
    x = 494,796.30

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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.