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Finding the Fourth Proportional to 629,685.16, 868,959.94 and 343,205.24

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Solution

The fourth proportional to 629,685.16, 868,959.94 and 343,205.24 is: 473,620.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,685.16 : 868,959.94 = 343,205.24 : x
  2. Step 2: Convert to fraction form
    629,685.16/868,959.94 = 343,205.24/x
  3. Step 3: Cross multiply
    629,685.16x = 868,959.94 × 343,205.24
  4. Step 4: Simplify right side
    629,685.16x = 298,231,604,758.09
  5. Step 5: Solve for x
    x = 298,231,604,758.09/629,685.16
  6. Step 6: Final answer
    x = 473,620.19

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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.