Home / 812,365.54-1,121,099.47-449,789.38

Finding the Fourth Proportional to 812,365.54, 1,121,099.47 and 449,789.38

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Solution

The fourth proportional to 812,365.54, 1,121,099.47 and 449,789.38 is: 620,728.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,365.54 : 1,121,099.47 = 449,789.38 : x
  2. Step 2: Convert to fraction form
    812,365.54/1,121,099.47 = 449,789.38/x
  3. Step 3: Cross multiply
    812,365.54x = 1,121,099.47 × 449,789.38
  4. Step 4: Simplify right side
    812,365.54x = 504,258,631,602.41
  5. Step 5: Solve for x
    x = 504,258,631,602.41/812,365.54
  6. Step 6: Final answer
    x = 620,728.73

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Double scale
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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.