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Finding the Fourth Proportional to 571,906.86, 789,231.78 and 317,258.25

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Solution

The fourth proportional to 571,906.86, 789,231.78 and 317,258.25 is: 437,816.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,906.86 : 789,231.78 = 317,258.25 : x
  2. Step 2: Convert to fraction form
    571,906.86/789,231.78 = 317,258.25/x
  3. Step 3: Cross multiply
    571,906.86x = 789,231.78 × 317,258.25
  4. Step 4: Simplify right side
    571,906.86x = 250,390,293,367.19
  5. Step 5: Solve for x
    x = 250,390,293,367.19/571,906.86
  6. Step 6: Final answer
    x = 437,816.56

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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.