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Finding the Fourth Proportional to 629,615.18, 868,843.59 and 343,129.10

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Solution

The fourth proportional to 629,615.18, 868,843.59 and 343,129.10 is: 473,504.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,615.18 : 868,843.59 = 343,129.10 : x
  2. Step 2: Convert to fraction form
    629,615.18/868,843.59 = 343,129.10/x
  3. Step 3: Cross multiply
    629,615.18x = 868,843.59 × 343,129.10
  4. Step 4: Simplify right side
    629,615.18x = 298,125,519,077.47
  5. Step 5: Solve for x
    x = 298,125,519,077.47/629,615.18
  6. Step 6: Final answer
    x = 473,504.34

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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.