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Finding the Fourth Proportional to 638,163.87, 880,666.32 and 347,775.54

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Solution

The fourth proportional to 638,163.87, 880,666.32 and 347,775.54 is: 479,930.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,163.87 : 880,666.32 = 347,775.54 : x
  2. Step 2: Convert to fraction form
    638,163.87/880,666.32 = 347,775.54/x
  3. Step 3: Cross multiply
    638,163.87x = 880,666.32 × 347,775.54
  4. Step 4: Simplify right side
    638,163.87x = 306,274,204,997.81
  5. Step 5: Solve for x
    x = 306,274,204,997.81/638,163.87
  6. Step 6: Final answer
    x = 479,930.34

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1.5x scale

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.