Home / 812,366.04-1,121,100.18-449,789.90

Finding the Fourth Proportional to 812,366.04, 1,121,100.18 and 449,789.90

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Solution

The fourth proportional to 812,366.04, 1,121,100.18 and 449,789.90 is: 620,729.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,366.04 : 1,121,100.18 = 449,789.90 : x
  2. Step 2: Convert to fraction form
    812,366.04/1,121,100.18 = 449,789.90/x
  3. Step 3: Cross multiply
    812,366.04x = 1,121,100.18 × 449,789.90
  4. Step 4: Simplify right side
    812,366.04x = 504,259,537,852.18
  5. Step 5: Solve for x
    x = 504,259,537,852.18/812,366.04
  6. Step 6: Final answer
    x = 620,729.47

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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.