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Finding the Fourth Proportional to 387,607.38, 535,062.24 and 363,394.86

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Solution

The fourth proportional to 387,607.38, 535,062.24 and 363,394.86 is: 501,638.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,607.38 : 535,062.24 = 363,394.86 : x
  2. Step 2: Convert to fraction form
    387,607.38/535,062.24 = 363,394.86/x
  3. Step 3: Cross multiply
    387,607.38x = 535,062.24 × 363,394.86
  4. Step 4: Simplify right side
    387,607.38x = 194,438,867,796.09
  5. Step 5: Solve for x
    x = 194,438,867,796.09/387,607.38
  6. Step 6: Final answer
    x = 501,638.71

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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.