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Finding the Fourth Proportional to 629,612.68, 868,840.14 and 343,126.60

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Solution

The fourth proportional to 629,612.68, 868,840.14 and 343,126.60 is: 473,500.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,612.68 : 868,840.14 = 343,126.60 : x
  2. Step 2: Convert to fraction form
    629,612.68/868,840.14 = 343,126.60/x
  3. Step 3: Cross multiply
    629,612.68x = 868,840.14 × 343,126.60
  4. Step 4: Simplify right side
    629,612.68x = 298,122,163,181.72
  5. Step 5: Solve for x
    x = 298,122,163,181.72/629,612.68
  6. Step 6: Final answer
    x = 473,500.89

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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.