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Finding the Fourth Proportional to 629,630.39, 868,864.64 and 343,144.32

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Solution

The fourth proportional to 629,630.39, 868,864.64 and 343,144.32 is: 473,525.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,630.39 : 868,864.64 = 343,144.32 : x
  2. Step 2: Convert to fraction form
    629,630.39/868,864.64 = 343,144.32/x
  3. Step 3: Cross multiply
    629,630.39x = 868,864.64 × 343,144.32
  4. Step 4: Simplify right side
    629,630.39x = 298,145,964,349.12
  5. Step 5: Solve for x
    x = 298,145,964,349.12/629,630.39
  6. Step 6: Final answer
    x = 473,525.38

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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.