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Finding the Fourth Proportional to 629,615.39, 868,843.94 and 343,129.32

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Solution

The fourth proportional to 629,615.39, 868,843.94 and 343,129.32 is: 473,504.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,615.39 : 868,843.94 = 343,129.32 : x
  2. Step 2: Convert to fraction form
    629,615.39/868,843.94 = 343,129.32/x
  3. Step 3: Cross multiply
    629,615.39x = 868,843.94 × 343,129.32
  4. Step 4: Simplify right side
    629,615.39x = 298,125,828,602.67
  5. Step 5: Solve for x
    x = 298,125,828,602.67/629,615.39
  6. Step 6: Final answer
    x = 473,504.68

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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.