Home / 812,435.28-1,121,172.50-449,858.46

Finding the Fourth Proportional to 812,435.28, 1,121,172.50 and 449,858.46

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Solution

The fourth proportional to 812,435.28, 1,121,172.50 and 449,858.46 is: 620,811.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,435.28 : 1,121,172.50 = 449,858.46 : x
  2. Step 2: Convert to fraction form
    812,435.28/1,121,172.50 = 449,858.46/x
  3. Step 3: Cross multiply
    812,435.28x = 1,121,172.50 × 449,858.46
  4. Step 4: Simplify right side
    812,435.28x = 504,368,934,244.35
  5. Step 5: Solve for x
    x = 504,368,934,244.35/812,435.28
  6. Step 6: Final answer
    x = 620,811.22

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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.