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Finding the Fourth Proportional to 629,485.80, 868,690.44 and 343,005.96

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Solution

The fourth proportional to 629,485.80, 868,690.44 and 343,005.96 is: 473,348.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,485.80 : 868,690.44 = 343,005.96 : x
  2. Step 2: Convert to fraction form
    629,485.80/868,690.44 = 343,005.96/x
  3. Step 3: Cross multiply
    629,485.80x = 868,690.44 × 343,005.96
  4. Step 4: Simplify right side
    629,485.80x = 297,965,998,315.02
  5. Step 5: Solve for x
    x = 297,965,998,315.02/629,485.80
  6. Step 6: Final answer
    x = 473,348.24

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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.