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Finding the Fourth Proportional to 629,633.39, 868,868.78 and 343,147.32

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Solution

The fourth proportional to 629,633.39, 868,868.78 and 343,147.32 is: 473,529.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,633.39 : 868,868.78 = 343,147.32 : x
  2. Step 2: Convert to fraction form
    629,633.39/868,868.78 = 343,147.32/x
  3. Step 3: Cross multiply
    629,633.39x = 868,868.78 × 343,147.32
  4. Step 4: Simplify right side
    629,633.39x = 298,149,991,572.93
  5. Step 5: Solve for x
    x = 298,149,991,572.93/629,633.39
  6. Step 6: Final answer
    x = 473,529.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.