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Finding the Fourth Proportional to 629,609.92, 944,693.80 and 330,019.28

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Solution

The fourth proportional to 629,609.92, 944,693.80 and 330,019.28 is: 495,175.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,609.92 : 944,693.80 = 330,019.28 : x
  2. Step 2: Convert to fraction form
    629,609.92/944,693.80 = 330,019.28/x
  3. Step 3: Cross multiply
    629,609.92x = 944,693.80 × 330,019.28
  4. Step 4: Simplify right side
    629,609.92x = 311,767,167,696.46
  5. Step 5: Solve for x
    x = 311,767,167,696.46/629,609.92
  6. Step 6: Final answer
    x = 495,175.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.