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Finding the Fourth Proportional to 629,607.68, 868,889.39 and 354,052.25

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Solution

The fourth proportional to 629,607.68, 868,889.39 and 354,052.25 is: 488,609.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,607.68 : 868,889.39 = 354,052.25 : x
  2. Step 2: Convert to fraction form
    629,607.68/868,889.39 = 354,052.25/x
  3. Step 3: Cross multiply
    629,607.68x = 868,889.39 × 354,052.25
  4. Step 4: Simplify right side
    629,607.68x = 307,632,246,587.98
  5. Step 5: Solve for x
    x = 307,632,246,587.98/629,607.68
  6. Step 6: Final answer
    x = 488,609.43

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Double scale
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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.