Home / 820,589.90-1,230,761.73-259,551.50

Finding the Fourth Proportional to 820,589.90, 1,230,761.73 and 259,551.50

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Solution

The fourth proportional to 820,589.90, 1,230,761.73 and 259,551.50 is: 389,288.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,589.90 : 1,230,761.73 = 259,551.50 : x
  2. Step 2: Convert to fraction form
    820,589.90/1,230,761.73 = 259,551.50/x
  3. Step 3: Cross multiply
    820,589.90x = 1,230,761.73 × 259,551.50
  4. Step 4: Simplify right side
    820,589.90x = 319,446,053,164.10
  5. Step 5: Solve for x
    x = 319,446,053,164.10/820,589.90
  6. Step 6: Final answer
    x = 389,288.31

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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.