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Finding the Fourth Proportional to 609,564.30, 914,346.45 and 396,987.90

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Solution

The fourth proportional to 609,564.30, 914,346.45 and 396,987.90 is: 595,481.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,564.30 : 914,346.45 = 396,987.90 : x
  2. Step 2: Convert to fraction form
    609,564.30/914,346.45 = 396,987.90/x
  3. Step 3: Cross multiply
    609,564.30x = 914,346.45 × 396,987.90
  4. Step 4: Simplify right side
    609,564.30x = 362,984,477,057.96
  5. Step 5: Solve for x
    x = 362,984,477,057.96/609,564.30
  6. Step 6: Final answer
    x = 595,481.85

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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.