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Finding the Fourth Proportional to 820,606.40, 1,230,786.48 and 259,568

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Solution

The fourth proportional to 820,606.40, 1,230,786.48 and 259,568 is: 389,313.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,606.40 : 1,230,786.48 = 259,568 : x
  2. Step 2: Convert to fraction form
    820,606.40/1,230,786.48 = 259,568/x
  3. Step 3: Cross multiply
    820,606.40x = 1,230,786.48 × 259,568
  4. Step 4: Simplify right side
    820,606.40x = 319,472,785,040.64
  5. Step 5: Solve for x
    x = 319,472,785,040.64/820,606.40
  6. Step 6: Final answer
    x = 389,313.06

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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.