Home / 812,382.46-1,120,997.28-449,715.50

Finding the Fourth Proportional to 812,382.46, 1,120,997.28 and 449,715.50

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Solution

The fourth proportional to 812,382.46, 1,120,997.28 and 449,715.50 is: 620,557.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,382.46 : 1,120,997.28 = 449,715.50 : x
  2. Step 2: Convert to fraction form
    812,382.46/1,120,997.28 = 449,715.50/x
  3. Step 3: Cross multiply
    812,382.46x = 1,120,997.28 × 449,715.50
  4. Step 4: Simplify right side
    812,382.46x = 504,129,852,273.84
  5. Step 5: Solve for x
    x = 504,129,852,273.84/812,382.46
  6. Step 6: Final answer
    x = 620,557.28

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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.