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Finding the Fourth Proportional to 426,960.79, 640,546.31 and 300,847.34

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Solution

The fourth proportional to 426,960.79, 640,546.31 and 300,847.34 is: 451,345.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,960.79 : 640,546.31 = 300,847.34 : x
  2. Step 2: Convert to fraction form
    426,960.79/640,546.31 = 300,847.34/x
  3. Step 3: Cross multiply
    426,960.79x = 640,546.31 × 300,847.34
  4. Step 4: Simplify right side
    426,960.79x = 192,706,655,863.80
  5. Step 5: Solve for x
    x = 192,706,655,863.80/426,960.79
  6. Step 6: Final answer
    x = 451,345.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.