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Finding the Fourth Proportional to 613,678.38, 846,705.06 and 395,794.86

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Solution

The fourth proportional to 613,678.38, 846,705.06 and 395,794.86 is: 546,086.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,678.38 : 846,705.06 = 395,794.86 : x
  2. Step 2: Convert to fraction form
    613,678.38/846,705.06 = 395,794.86/x
  3. Step 3: Cross multiply
    613,678.38x = 846,705.06 × 395,794.86
  4. Step 4: Simplify right side
    613,678.38x = 335,121,510,683.99
  5. Step 5: Solve for x
    x = 335,121,510,683.99/613,678.38
  6. Step 6: Final answer
    x = 546,086.55

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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.