Home / 891,550.50-1,230,361.30-489,142.50

Finding the Fourth Proportional to 891,550.50, 1,230,361.30 and 489,142.50

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Solution

The fourth proportional to 891,550.50, 1,230,361.30 and 489,142.50 is: 675,028.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,550.50 : 1,230,361.30 = 489,142.50 : x
  2. Step 2: Convert to fraction form
    891,550.50/1,230,361.30 = 489,142.50/x
  3. Step 3: Cross multiply
    891,550.50x = 1,230,361.30 × 489,142.50
  4. Step 4: Simplify right side
    891,550.50x = 601,822,002,185.25
  5. Step 5: Solve for x
    x = 601,822,002,185.25/891,550.50
  6. Step 6: Final answer
    x = 675,028.51

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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.