Home / 989,414.96-1,483,825.37-420,791.31

Finding the Fourth Proportional to 989,414.96, 1,483,825.37 and 420,791.31

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Solution

The fourth proportional to 989,414.96, 1,483,825.37 and 420,791.31 is: 631,060.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,414.96 : 1,483,825.37 = 420,791.31 : x
  2. Step 2: Convert to fraction form
    989,414.96/1,483,825.37 = 420,791.31/x
  3. Step 3: Cross multiply
    989,414.96x = 1,483,825.37 × 420,791.31
  4. Step 4: Simplify right side
    989,414.96x = 624,380,819,149.58
  5. Step 5: Solve for x
    x = 624,380,819,149.58/989,414.96
  6. Step 6: Final answer
    x = 631,060.62

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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.