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Finding the Fourth Proportional to 629,939.82, 869,321.10 and 343,464.66

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Solution

The fourth proportional to 629,939.82, 869,321.10 and 343,464.66 is: 473,983.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,939.82 : 869,321.10 = 343,464.66 : x
  2. Step 2: Convert to fraction form
    629,939.82/869,321.10 = 343,464.66/x
  3. Step 3: Cross multiply
    629,939.82x = 869,321.10 × 343,464.66
  4. Step 4: Simplify right side
    629,939.82x = 298,581,076,042.33
  5. Step 5: Solve for x
    x = 298,581,076,042.33/629,939.82
  6. Step 6: Final answer
    x = 473,983.49

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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.