Home / 812,422.92-1,121,206.80-449,880.48

Finding the Fourth Proportional to 812,422.92, 1,121,206.80 and 449,880.48

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Solution

The fourth proportional to 812,422.92, 1,121,206.80 and 449,880.48 is: 620,870.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,422.92 : 1,121,206.80 = 449,880.48 : x
  2. Step 2: Convert to fraction form
    812,422.92/1,121,206.80 = 449,880.48/x
  3. Step 3: Cross multiply
    812,422.92x = 1,121,206.80 × 449,880.48
  4. Step 4: Simplify right side
    812,422.92x = 504,409,053,363.26
  5. Step 5: Solve for x
    x = 504,409,053,363.26/812,422.92
  6. Step 6: Final answer
    x = 620,870.04

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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.