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Finding the Fourth Proportional to 613,672.38, 846,696.78 and 395,788.86

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Solution

The fourth proportional to 613,672.38, 846,696.78 and 395,788.86 is: 546,078.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,672.38 : 846,696.78 = 395,788.86 : x
  2. Step 2: Convert to fraction form
    613,672.38/846,696.78 = 395,788.86/x
  3. Step 3: Cross multiply
    613,672.38x = 846,696.78 × 395,788.86
  4. Step 4: Simplify right side
    613,672.38x = 335,113,153,321.87
  5. Step 5: Solve for x
    x = 335,113,153,321.87/613,672.38
  6. Step 6: Final answer
    x = 546,078.27

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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.