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Finding the Fourth Proportional to 479,695, 662,056.86 and 278,607.64

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Solution

The fourth proportional to 479,695, 662,056.86 and 278,607.64 is: 384,523.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,695 : 662,056.86 = 278,607.64 : x
  2. Step 2: Convert to fraction form
    479,695/662,056.86 = 278,607.64/x
  3. Step 3: Cross multiply
    479,695x = 662,056.86 × 278,607.64
  4. Step 4: Simplify right side
    479,695x = 184,454,099,310.41
  5. Step 5: Solve for x
    x = 184,454,099,310.41/479,695
  6. Step 6: Final answer
    x = 384,523.71

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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.