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Finding the Fourth Proportional to 629,577.16, 868,791.20 and 343,091.10

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Solution

The fourth proportional to 629,577.16, 868,791.20 and 343,091.10 is: 473,451.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,577.16 : 868,791.20 = 343,091.10 : x
  2. Step 2: Convert to fraction form
    629,577.16/868,791.20 = 343,091.10/x
  3. Step 3: Cross multiply
    629,577.16x = 868,791.20 × 343,091.10
  4. Step 4: Simplify right side
    629,577.16x = 298,074,528,478.32
  5. Step 5: Solve for x
    x = 298,074,528,478.32/629,577.16
  6. Step 6: Final answer
    x = 473,451.94

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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.