Home / 856,220.33-1,182,378.30-640,986.68

Finding the Fourth Proportional to 856,220.33, 1,182,378.30 and 640,986.68

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Solution

The fourth proportional to 856,220.33, 1,182,378.30 and 640,986.68 is: 885,156.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,220.33 : 1,182,378.30 = 640,986.68 : x
  2. Step 2: Convert to fraction form
    856,220.33/1,182,378.30 = 640,986.68/x
  3. Step 3: Cross multiply
    856,220.33x = 1,182,378.30 × 640,986.68
  4. Step 4: Simplify right side
    856,220.33x = 757,888,741,021.04
  5. Step 5: Solve for x
    x = 757,888,741,021.04/856,220.33
  6. Step 6: Final answer
    x = 885,156.21

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.