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Finding the Fourth Proportional to 629,229.79, 943,480.18 and 429,791.19

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Solution

The fourth proportional to 629,229.79, 943,480.18 and 429,791.19 is: 644,437.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,229.79 : 943,480.18 = 429,791.19 : x
  2. Step 2: Convert to fraction form
    629,229.79/943,480.18 = 429,791.19/x
  3. Step 3: Cross multiply
    629,229.79x = 943,480.18 × 429,791.19
  4. Step 4: Simplify right side
    629,229.79x = 405,499,469,303.61
  5. Step 5: Solve for x
    x = 405,499,469,303.61/629,229.79
  6. Step 6: Final answer
    x = 644,437.81

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Double scale
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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.