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Finding the Fourth Proportional to 641,894.72, 885,828.58 and 351,518.54

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Solution

The fourth proportional to 641,894.72, 885,828.58 and 351,518.54 is: 485,103.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,894.72 : 885,828.58 = 351,518.54 : x
  2. Step 2: Convert to fraction form
    641,894.72/885,828.58 = 351,518.54/x
  3. Step 3: Cross multiply
    641,894.72x = 885,828.58 × 351,518.54
  4. Step 4: Simplify right side
    641,894.72x = 311,385,169,131.87
  5. Step 5: Solve for x
    x = 311,385,169,131.87/641,894.72
  6. Step 6: Final answer
    x = 485,103.18

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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.