Home / 777,680.66-1,073,144.67-428,805.56

Finding the Fourth Proportional to 777,680.66, 1,073,144.67 and 428,805.56

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Solution

The fourth proportional to 777,680.66, 1,073,144.67 and 428,805.56 is: 591,721.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,680.66 : 1,073,144.67 = 428,805.56 : x
  2. Step 2: Convert to fraction form
    777,680.66/1,073,144.67 = 428,805.56/x
  3. Step 3: Cross multiply
    777,680.66x = 1,073,144.67 × 428,805.56
  4. Step 4: Simplify right side
    777,680.66x = 460,170,401,180.37
  5. Step 5: Solve for x
    x = 460,170,401,180.37/777,680.66
  6. Step 6: Final answer
    x = 591,721.54

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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.