Home / 726,481.89-1,002,529.35-420,571.22

Finding the Fourth Proportional to 726,481.89, 1,002,529.35 and 420,571.22

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Solution

The fourth proportional to 726,481.89, 1,002,529.35 and 420,571.22 is: 580,379.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,481.89 : 1,002,529.35 = 420,571.22 : x
  2. Step 2: Convert to fraction form
    726,481.89/1,002,529.35 = 420,571.22/x
  3. Step 3: Cross multiply
    726,481.89x = 1,002,529.35 × 420,571.22
  4. Step 4: Simplify right side
    726,481.89x = 421,634,986,802.66
  5. Step 5: Solve for x
    x = 421,634,986,802.66/726,481.89
  6. Step 6: Final answer
    x = 580,379.21

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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.