Home / 812,369.30-1,121,104.65-449,793.16

Finding the Fourth Proportional to 812,369.30, 1,121,104.65 and 449,793.16

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Solution

The fourth proportional to 812,369.30, 1,121,104.65 and 449,793.16 is: 620,733.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,369.30 : 1,121,104.65 = 449,793.16 : x
  2. Step 2: Convert to fraction form
    812,369.30/1,121,104.65 = 449,793.16/x
  3. Step 3: Cross multiply
    812,369.30x = 1,121,104.65 × 449,793.16
  4. Step 4: Simplify right side
    812,369.30x = 504,265,197,608.67
  5. Step 5: Solve for x
    x = 504,265,197,608.67/812,369.30
  6. Step 6: Final answer
    x = 620,733.94

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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.