Home / 820,399.48-1,131,835.62-513,942.52

Finding the Fourth Proportional to 820,399.48, 1,131,835.62 and 513,942.52

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Solution

The fourth proportional to 820,399.48, 1,131,835.62 and 513,942.52 is: 709,042.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,399.48 : 1,131,835.62 = 513,942.52 : x
  2. Step 2: Convert to fraction form
    820,399.48/1,131,835.62 = 513,942.52/x
  3. Step 3: Cross multiply
    820,399.48x = 1,131,835.62 × 513,942.52
  4. Step 4: Simplify right side
    820,399.48x = 581,698,450,768.56
  5. Step 5: Solve for x
    x = 581,698,450,768.56/820,399.48
  6. Step 6: Final answer
    x = 709,042.93

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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.