Home / 812,435.54-1,121,172.84-449,858.70

Finding the Fourth Proportional to 812,435.54, 1,121,172.84 and 449,858.70

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Solution

The fourth proportional to 812,435.54, 1,121,172.84 and 449,858.70 is: 620,811.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,435.54 : 1,121,172.84 = 449,858.70 : x
  2. Step 2: Convert to fraction form
    812,435.54/1,121,172.84 = 449,858.70/x
  3. Step 3: Cross multiply
    812,435.54x = 1,121,172.84 × 449,858.70
  4. Step 4: Simplify right side
    812,435.54x = 504,369,356,277.71
  5. Step 5: Solve for x
    x = 504,369,356,277.71/812,435.54
  6. Step 6: Final answer
    x = 620,811.54

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1.5x scale

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.