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Finding the Fourth Proportional to 617,850.76, 852,435.78 and 345,878.60

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Solution

The fourth proportional to 617,850.76, 852,435.78 and 345,878.60 is: 477,201.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,850.76 : 852,435.78 = 345,878.60 : x
  2. Step 2: Convert to fraction form
    617,850.76/852,435.78 = 345,878.60/x
  3. Step 3: Cross multiply
    617,850.76x = 852,435.78 × 345,878.60
  4. Step 4: Simplify right side
    617,850.76x = 294,839,294,176.31
  5. Step 5: Solve for x
    x = 294,839,294,176.31/617,850.76
  6. Step 6: Final answer
    x = 477,201.48

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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.