Home / 812,489.93-1,121,222.34-449,906.03

Finding the Fourth Proportional to 812,489.93, 1,121,222.34 and 449,906.03

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Solution

The fourth proportional to 812,489.93, 1,121,222.34 and 449,906.03 is: 620,862.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,489.93 : 1,121,222.34 = 449,906.03 : x
  2. Step 2: Convert to fraction form
    812,489.93/1,121,222.34 = 449,906.03/x
  3. Step 3: Cross multiply
    812,489.93x = 1,121,222.34 × 449,906.03
  4. Step 4: Simplify right side
    812,489.93x = 504,444,686,130.60
  5. Step 5: Solve for x
    x = 504,444,686,130.60/812,489.93
  6. Step 6: Final answer
    x = 620,862.70

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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.