Home / 812,369.53-1,121,105.01-449,793.40

Finding the Fourth Proportional to 812,369.53, 1,121,105.01 and 449,793.40

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Solution

The fourth proportional to 812,369.53, 1,121,105.01 and 449,793.40 is: 620,734.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,369.53 : 1,121,105.01 = 449,793.40 : x
  2. Step 2: Convert to fraction form
    812,369.53/1,121,105.01 = 449,793.40/x
  3. Step 3: Cross multiply
    812,369.53x = 1,121,105.01 × 449,793.40
  4. Step 4: Simplify right side
    812,369.53x = 504,265,634,204.93
  5. Step 5: Solve for x
    x = 504,265,634,204.93/812,369.53
  6. Step 6: Final answer
    x = 620,734.30

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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.