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Finding the Fourth Proportional to 629,548, 868,774.90 and 343,067.40

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Solution

The fourth proportional to 629,548, 868,774.90 and 343,067.40 is: 473,432.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,548 : 868,774.90 = 343,067.40 : x
  2. Step 2: Convert to fraction form
    629,548/868,774.90 = 343,067.40/x
  3. Step 3: Cross multiply
    629,548x = 868,774.90 × 343,067.40
  4. Step 4: Simplify right side
    629,548x = 298,048,346,128.26
  5. Step 5: Solve for x
    x = 298,048,346,128.26/629,548
  6. Step 6: Final answer
    x = 473,432.28

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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.