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Finding the Fourth Proportional to 404,078.40, 606,117.60 and 329,428.80

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Solution

The fourth proportional to 404,078.40, 606,117.60 and 329,428.80 is: 494,143.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,078.40 : 606,117.60 = 329,428.80 : x
  2. Step 2: Convert to fraction form
    404,078.40/606,117.60 = 329,428.80/x
  3. Step 3: Cross multiply
    404,078.40x = 606,117.60 × 329,428.80
  4. Step 4: Simplify right side
    404,078.40x = 199,672,593,626.88
  5. Step 5: Solve for x
    x = 199,672,593,626.88/404,078.40
  6. Step 6: Final answer
    x = 494,143.20

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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.