Home / 769,495.65-1,153,620.86-320,553.75

Finding the Fourth Proportional to 769,495.65, 1,153,620.86 and 320,553.75

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Solution

The fourth proportional to 769,495.65, 1,153,620.86 and 320,553.75 is: 480,571.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,495.65 : 1,153,620.86 = 320,553.75 : x
  2. Step 2: Convert to fraction form
    769,495.65/1,153,620.86 = 320,553.75/x
  3. Step 3: Cross multiply
    769,495.65x = 1,153,620.86 × 320,553.75
  4. Step 4: Simplify right side
    769,495.65x = 369,797,496,376.09
  5. Step 5: Solve for x
    x = 369,797,496,376.09/769,495.65
  6. Step 6: Final answer
    x = 480,571.27

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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.