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Finding the Fourth Proportional to 412,846.40, 620,669.40 and 329,669.12

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Solution

The fourth proportional to 412,846.40, 620,669.40 and 329,669.12 is: 495,621.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,846.40 : 620,669.40 = 329,669.12 : x
  2. Step 2: Convert to fraction form
    412,846.40/620,669.40 = 329,669.12/x
  3. Step 3: Cross multiply
    412,846.40x = 620,669.40 × 329,669.12
  4. Step 4: Simplify right side
    412,846.40x = 204,615,534,908.93
  5. Step 5: Solve for x
    x = 204,615,534,908.93/412,846.40
  6. Step 6: Final answer
    x = 495,621.46

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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.