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Finding the Fourth Proportional to 612,341.70, 917,998.75 and 270,729.97

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Solution

The fourth proportional to 612,341.70, 917,998.75 and 270,729.97 is: 405,867.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,341.70 : 917,998.75 = 270,729.97 : x
  2. Step 2: Convert to fraction form
    612,341.70/917,998.75 = 270,729.97/x
  3. Step 3: Cross multiply
    612,341.70x = 917,998.75 × 270,729.97
  4. Step 4: Simplify right side
    612,341.70x = 248,529,768,103.89
  5. Step 5: Solve for x
    x = 248,529,768,103.89/612,341.70
  6. Step 6: Final answer
    x = 405,867.79

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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.