Home / 925,685.28-1,388,028.65-419,970.31

Finding the Fourth Proportional to 925,685.28, 1,388,028.65 and 419,970.31

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Solution

The fourth proportional to 925,685.28, 1,388,028.65 and 419,970.31 is: 629,728.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    925,685.28 : 1,388,028.65 = 419,970.31 : x
  2. Step 2: Convert to fraction form
    925,685.28/1,388,028.65 = 419,970.31/x
  3. Step 3: Cross multiply
    925,685.28x = 1,388,028.65 × 419,970.31
  4. Step 4: Simplify right side
    925,685.28x = 582,930,820,009.24
  5. Step 5: Solve for x
    x = 582,930,820,009.24/925,685.28
  6. Step 6: Final answer
    x = 629,728.95

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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.