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Finding the Fourth Proportional to 629,707.34, 868,996.68 and 343,221.68

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Solution

The fourth proportional to 629,707.34, 868,996.68 and 343,221.68 is: 473,646.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,707.34 : 868,996.68 = 343,221.68 : x
  2. Step 2: Convert to fraction form
    629,707.34/868,996.68 = 343,221.68/x
  3. Step 3: Cross multiply
    629,707.34x = 868,996.68 × 343,221.68
  4. Step 4: Simplify right side
    629,707.34x = 298,258,500,424.02
  5. Step 5: Solve for x
    x = 298,258,500,424.02/629,707.34
  6. Step 6: Final answer
    x = 473,646.22

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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.