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Finding the Fourth Proportional to 578,319.62, 798,072.82 and 320,171.81

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Solution

The fourth proportional to 578,319.62, 798,072.82 and 320,171.81 is: 441,832.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,319.62 : 798,072.82 = 320,171.81 : x
  2. Step 2: Convert to fraction form
    578,319.62/798,072.82 = 320,171.81/x
  3. Step 3: Cross multiply
    578,319.62x = 798,072.82 × 320,171.81
  4. Step 4: Simplify right side
    578,319.62x = 255,520,414,500.41
  5. Step 5: Solve for x
    x = 255,520,414,500.41/578,319.62
  6. Step 6: Final answer
    x = 441,832.52

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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.