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Finding the Fourth Proportional to 638,237.97, 880,742.48 and 347,843.37

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Solution

The fourth proportional to 638,237.97, 880,742.48 and 347,843.37 is: 480,009.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,237.97 : 880,742.48 = 347,843.37 : x
  2. Step 2: Convert to fraction form
    638,237.97/880,742.48 = 347,843.37/x
  3. Step 3: Cross multiply
    638,237.97x = 880,742.48 × 347,843.37
  4. Step 4: Simplify right side
    638,237.97x = 306,360,433,908.93
  5. Step 5: Solve for x
    x = 306,360,433,908.93/638,237.97
  6. Step 6: Final answer
    x = 480,009.73

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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.