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Finding the Fourth Proportional to 657,568.73, 985,559.97 and 320,103.56

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Solution

The fourth proportional to 657,568.73, 985,559.97 and 320,103.56 is: 479,769.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,568.73 : 985,559.97 = 320,103.56 : x
  2. Step 2: Convert to fraction form
    657,568.73/985,559.97 = 320,103.56/x
  3. Step 3: Cross multiply
    657,568.73x = 985,559.97 × 320,103.56
  4. Step 4: Simplify right side
    657,568.73x = 315,481,254,990.49
  5. Step 5: Solve for x
    x = 315,481,254,990.49/657,568.73
  6. Step 6: Final answer
    x = 479,769.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.