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Finding the Fourth Proportional to 695,148.48, 959,325.12 and 393,336

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Solution

The fourth proportional to 695,148.48, 959,325.12 and 393,336 is: 542,815.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,148.48 : 959,325.12 = 393,336 : x
  2. Step 2: Convert to fraction form
    695,148.48/959,325.12 = 393,336/x
  3. Step 3: Cross multiply
    695,148.48x = 959,325.12 × 393,336
  4. Step 4: Simplify right side
    695,148.48x = 377,337,105,400.32
  5. Step 5: Solve for x
    x = 377,337,105,400.32/695,148.48
  6. Step 6: Final answer
    x = 542,815.12

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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.