Home / 680,564.24-1,021,060.91-320,720.56

Finding the Fourth Proportional to 680,564.24, 1,021,060.91 and 320,720.56

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Solution

The fourth proportional to 680,564.24, 1,021,060.91 and 320,720.56 is: 481,181.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,564.24 : 1,021,060.91 = 320,720.56 : x
  2. Step 2: Convert to fraction form
    680,564.24/1,021,060.91 = 320,720.56/x
  3. Step 3: Cross multiply
    680,564.24x = 1,021,060.91 × 320,720.56
  4. Step 4: Simplify right side
    680,564.24x = 327,475,221,744.01
  5. Step 5: Solve for x
    x = 327,475,221,744.01/680,564.24
  6. Step 6: Final answer
    x = 481,181.94

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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.