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Finding the Fourth Proportional to 412,843.40, 620,664.90 and 329,666.12

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Solution

The fourth proportional to 412,843.40, 620,664.90 and 329,666.12 is: 495,616.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,843.40 : 620,664.90 = 329,666.12 : x
  2. Step 2: Convert to fraction form
    412,843.40/620,664.90 = 329,666.12/x
  3. Step 3: Cross multiply
    412,843.40x = 620,664.90 × 329,666.12
  4. Step 4: Simplify right side
    412,843.40x = 204,612,189,403.19
  5. Step 5: Solve for x
    x = 204,612,189,403.19/412,843.40
  6. Step 6: Final answer
    x = 495,616.96

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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.