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Finding the Fourth Proportional to 626,076.45, 863,985.42 and 354,138.48

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Solution

The fourth proportional to 626,076.45, 863,985.42 and 354,138.48 is: 488,711.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,076.45 : 863,985.42 = 354,138.48 : x
  2. Step 2: Convert to fraction form
    626,076.45/863,985.42 = 354,138.48/x
  3. Step 3: Cross multiply
    626,076.45x = 863,985.42 × 354,138.48
  4. Step 4: Simplify right side
    626,076.45x = 305,970,483,380.96
  5. Step 5: Solve for x
    x = 305,970,483,380.96/626,076.45
  6. Step 6: Final answer
    x = 488,711.06

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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.