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Finding the Fourth Proportional to 629,419.28, 868,598.60 and 342,939.37

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Solution

The fourth proportional to 629,419.28, 868,598.60 and 342,939.37 is: 473,256.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,419.28 : 868,598.60 = 342,939.37 : x
  2. Step 2: Convert to fraction form
    629,419.28/868,598.60 = 342,939.37/x
  3. Step 3: Cross multiply
    629,419.28x = 868,598.60 × 342,939.37
  4. Step 4: Simplify right side
    629,419.28x = 297,876,650,609.19
  5. Step 5: Solve for x
    x = 297,876,650,609.19/629,419.28
  6. Step 6: Final answer
    x = 473,256.32

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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.