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Finding the Fourth Proportional to 422,416.80, 632,458.80 and 329,104.80

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Solution

The fourth proportional to 422,416.80, 632,458.80 and 329,104.80 is: 492,748.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,416.80 : 632,458.80 = 329,104.80 : x
  2. Step 2: Convert to fraction form
    422,416.80/632,458.80 = 329,104.80/x
  3. Step 3: Cross multiply
    422,416.80x = 632,458.80 × 329,104.80
  4. Step 4: Simplify right side
    422,416.80x = 208,145,226,882.24
  5. Step 5: Solve for x
    x = 208,145,226,882.24/422,416.80
  6. Step 6: Final answer
    x = 492,748.46

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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.