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Finding the Fourth Proportional to 629,945.76, 944,713.28 and 209,108.64

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Solution

The fourth proportional to 629,945.76, 944,713.28 and 209,108.64 is: 313,594.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,945.76 : 944,713.28 = 209,108.64 : x
  2. Step 2: Convert to fraction form
    629,945.76/944,713.28 = 209,108.64/x
  3. Step 3: Cross multiply
    629,945.76x = 944,713.28 × 209,108.64
  4. Step 4: Simplify right side
    629,945.76x = 197,547,709,170.74
  5. Step 5: Solve for x
    x = 197,547,709,170.74/629,945.76
  6. Step 6: Final answer
    x = 313,594.79

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Double scale
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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.