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Finding the Fourth Proportional to 629,553, 868,781.80 and 343,072.40

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Solution

The fourth proportional to 629,553, 868,781.80 and 343,072.40 is: 473,439.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,553 : 868,781.80 = 343,072.40 : x
  2. Step 2: Convert to fraction form
    629,553/868,781.80 = 343,072.40/x
  3. Step 3: Cross multiply
    629,553x = 868,781.80 × 343,072.40
  4. Step 4: Simplify right side
    629,553x = 298,055,057,202.32
  5. Step 5: Solve for x
    x = 298,055,057,202.32/629,553
  6. Step 6: Final answer
    x = 473,439.18

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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.