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Finding the Fourth Proportional to 641,708.96, 885,558.62 and 351,339.35

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Solution

The fourth proportional to 641,708.96, 885,558.62 and 351,339.35 is: 484,848.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,708.96 : 885,558.62 = 351,339.35 : x
  2. Step 2: Convert to fraction form
    641,708.96/885,558.62 = 351,339.35/x
  3. Step 3: Cross multiply
    641,708.96x = 885,558.62 × 351,339.35
  4. Step 4: Simplify right side
    641,708.96x = 311,131,586,388.25
  5. Step 5: Solve for x
    x = 311,131,586,388.25/641,708.96
  6. Step 6: Final answer
    x = 484,848.44

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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.