Home / 925,112.20-1,387,012.20-419,915.20

Finding the Fourth Proportional to 925,112.20, 1,387,012.20 and 419,915.20

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Solution

The fourth proportional to 925,112.20, 1,387,012.20 and 419,915.20 is: 629,574.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    925,112.20 : 1,387,012.20 = 419,915.20 : x
  2. Step 2: Convert to fraction form
    925,112.20/1,387,012.20 = 419,915.20/x
  3. Step 3: Cross multiply
    925,112.20x = 1,387,012.20 × 419,915.20
  4. Step 4: Simplify right side
    925,112.20x = 582,427,505,365.44
  5. Step 5: Solve for x
    x = 582,427,505,365.44/925,112.20
  6. Step 6: Final answer
    x = 629,574.99

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1.5x scale

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.