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Finding the Fourth Proportional to 422,502.04, 632,824.26 and 399,210.76

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Solution

The fourth proportional to 422,502.04, 632,824.26 and 399,210.76 is: 597,938.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,502.04 : 632,824.26 = 399,210.76 : x
  2. Step 2: Convert to fraction form
    422,502.04/632,824.26 = 399,210.76/x
  3. Step 3: Cross multiply
    422,502.04x = 632,824.26 × 399,210.76
  4. Step 4: Simplify right side
    422,502.04x = 252,630,253,781.04
  5. Step 5: Solve for x
    x = 252,630,253,781.04/422,502.04
  6. Step 6: Final answer
    x = 597,938.54

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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.