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Finding the Fourth Proportional to 624,563.76, 861,847.78 and 352,697.80

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Solution

The fourth proportional to 624,563.76, 861,847.78 and 352,697.80 is: 486,694.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,563.76 : 861,847.78 = 352,697.80 : x
  2. Step 2: Convert to fraction form
    624,563.76/861,847.78 = 352,697.80/x
  3. Step 3: Cross multiply
    624,563.76x = 861,847.78 × 352,697.80
  4. Step 4: Simplify right side
    624,563.76x = 303,971,815,940.88
  5. Step 5: Solve for x
    x = 303,971,815,940.88/624,563.76
  6. Step 6: Final answer
    x = 486,694.61

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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.