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Finding the Fourth Proportional to 422,830.60, 635,801.10 and 354,401.80

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Solution

The fourth proportional to 422,830.60, 635,801.10 and 354,401.80 is: 532,906.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,830.60 : 635,801.10 = 354,401.80 : x
  2. Step 2: Convert to fraction form
    422,830.60/635,801.10 = 354,401.80/x
  3. Step 3: Cross multiply
    422,830.60x = 635,801.10 × 354,401.80
  4. Step 4: Simplify right side
    422,830.60x = 225,329,054,281.98
  5. Step 5: Solve for x
    x = 225,329,054,281.98/422,830.60
  6. Step 6: Final answer
    x = 532,906.21

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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.