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Finding the Fourth Proportional to 520,645.73, 780,935.78 and 165,914.33

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Solution

The fourth proportional to 520,645.73, 780,935.78 and 165,914.33 is: 248,861.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,645.73 : 780,935.78 = 165,914.33 : x
  2. Step 2: Convert to fraction form
    520,645.73/780,935.78 = 165,914.33/x
  3. Step 3: Cross multiply
    520,645.73x = 780,935.78 × 165,914.33
  4. Step 4: Simplify right side
    520,645.73x = 129,568,433,221.83
  5. Step 5: Solve for x
    x = 129,568,433,221.83/520,645.73
  6. Step 6: Final answer
    x = 248,861.03

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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.