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Finding the Fourth Proportional to 695,200.48, 959,396.88 and 393,388

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Solution

The fourth proportional to 695,200.48, 959,396.88 and 393,388 is: 542,886.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,200.48 : 959,396.88 = 393,388 : x
  2. Step 2: Convert to fraction form
    695,200.48/959,396.88 = 393,388/x
  3. Step 3: Cross multiply
    695,200.48x = 959,396.88 × 393,388
  4. Step 4: Simplify right side
    695,200.48x = 377,415,219,829.44
  5. Step 5: Solve for x
    x = 377,415,219,829.44/695,200.48
  6. Step 6: Final answer
    x = 542,886.88

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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.