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Finding the Fourth Proportional to 422,399.48, 635,397.21 and 382,894.83

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Solution

The fourth proportional to 422,399.48, 635,397.21 and 382,894.83 is: 575,972.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,399.48 : 635,397.21 = 382,894.83 : x
  2. Step 2: Convert to fraction form
    422,399.48/635,397.21 = 382,894.83/x
  3. Step 3: Cross multiply
    422,399.48x = 635,397.21 × 382,894.83
  4. Step 4: Simplify right side
    422,399.48x = 243,290,306,705.42
  5. Step 5: Solve for x
    x = 243,290,306,705.42/422,399.48
  6. Step 6: Final answer
    x = 575,972.09

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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.