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Finding the Fourth Proportional to 629,648.39, 868,889.48 and 343,162.32

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Solution

The fourth proportional to 629,648.39, 868,889.48 and 343,162.32 is: 473,550.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,648.39 : 868,889.48 = 343,162.32 : x
  2. Step 2: Convert to fraction form
    629,648.39/868,889.48 = 343,162.32/x
  3. Step 3: Cross multiply
    629,648.39x = 868,889.48 × 343,162.32
  4. Step 4: Simplify right side
    629,648.39x = 298,170,128,064.58
  5. Step 5: Solve for x
    x = 298,170,128,064.58/629,648.39
  6. Step 6: Final answer
    x = 473,550.21

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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.