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Finding the Fourth Proportional to 695,992.78, 960,537.46 and 390,121.12

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Solution

The fourth proportional to 695,992.78, 960,537.46 and 390,121.12 is: 538,404.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,992.78 : 960,537.46 = 390,121.12 : x
  2. Step 2: Convert to fraction form
    695,992.78/960,537.46 = 390,121.12/x
  3. Step 3: Cross multiply
    695,992.78x = 960,537.46 × 390,121.12
  4. Step 4: Simplify right side
    695,992.78x = 374,725,949,697.16
  5. Step 5: Solve for x
    x = 374,725,949,697.16/695,992.78
  6. Step 6: Final answer
    x = 538,404.94

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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.