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Finding the Fourth Proportional to 629,449.74, 868,640.76 and 342,969.87

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Solution

The fourth proportional to 629,449.74, 868,640.76 and 342,969.87 is: 473,298.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,449.74 : 868,640.76 = 342,969.87 : x
  2. Step 2: Convert to fraction form
    629,449.74/868,640.76 = 342,969.87/x
  3. Step 3: Cross multiply
    629,449.74x = 868,640.76 × 342,969.87
  4. Step 4: Simplify right side
    629,449.74x = 297,917,608,533.90
  5. Step 5: Solve for x
    x = 297,917,608,533.90/629,449.74
  6. Step 6: Final answer
    x = 473,298.49

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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.