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Finding the Fourth Proportional to 609,344.34, 840,903.99 and 351,078.78

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Solution

The fourth proportional to 609,344.34, 840,903.99 and 351,078.78 is: 484,493.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,344.34 : 840,903.99 = 351,078.78 : x
  2. Step 2: Convert to fraction form
    609,344.34/840,903.99 = 351,078.78/x
  3. Step 3: Cross multiply
    609,344.34x = 840,903.99 × 351,078.78
  4. Step 4: Simplify right side
    609,344.34x = 295,223,546,906.33
  5. Step 5: Solve for x
    x = 295,223,546,906.33/609,344.34
  6. Step 6: Final answer
    x = 484,493.79

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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.