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Finding the Fourth Proportional to 638,173.86, 880,686.03 and 351,704.46

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Solution

The fourth proportional to 638,173.86, 880,686.03 and 351,704.46 is: 485,355.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,173.86 : 880,686.03 = 351,704.46 : x
  2. Step 2: Convert to fraction form
    638,173.86/880,686.03 = 351,704.46/x
  3. Step 3: Cross multiply
    638,173.86x = 880,686.03 × 351,704.46
  4. Step 4: Simplify right side
    638,173.86x = 309,741,204,610.69
  5. Step 5: Solve for x
    x = 309,741,204,610.69/638,173.86
  6. Step 6: Final answer
    x = 485,355.52

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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.