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Finding the Fourth Proportional to 656,704.56, 985,112.72 and 207,305.20

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Solution

The fourth proportional to 656,704.56, 985,112.72 and 207,305.20 is: 310,975.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,704.56 : 985,112.72 = 207,305.20 : x
  2. Step 2: Convert to fraction form
    656,704.56/985,112.72 = 207,305.20/x
  3. Step 3: Cross multiply
    656,704.56x = 985,112.72 × 207,305.20
  4. Step 4: Simplify right side
    656,704.56x = 204,218,989,442.14
  5. Step 5: Solve for x
    x = 204,218,989,442.14/656,704.56
  6. Step 6: Final answer
    x = 310,975.44

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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.