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Finding the Fourth Proportional to 578,327.69, 798,117.15 and 320,204.64

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Solution

The fourth proportional to 578,327.69, 798,117.15 and 320,204.64 is: 441,896.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,327.69 : 798,117.15 = 320,204.64 : x
  2. Step 2: Convert to fraction form
    578,327.69/798,117.15 = 320,204.64/x
  3. Step 3: Cross multiply
    578,327.69x = 798,117.15 × 320,204.64
  4. Step 4: Simplify right side
    578,327.69x = 255,560,815,494.09
  5. Step 5: Solve for x
    x = 255,560,815,494.09/578,327.69
  6. Step 6: Final answer
    x = 441,896.21

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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.