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Finding the Fourth Proportional to 633,687.66, 874,475.34 and 347,201.58

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Solution

The fourth proportional to 633,687.66, 874,475.34 and 347,201.58 is: 479,130.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,687.66 : 874,475.34 = 347,201.58 : x
  2. Step 2: Convert to fraction form
    633,687.66/874,475.34 = 347,201.58/x
  3. Step 3: Cross multiply
    633,687.66x = 874,475.34 × 347,201.58
  4. Step 4: Simplify right side
    633,687.66x = 303,619,219,719.04
  5. Step 5: Solve for x
    x = 303,619,219,719.04/633,687.66
  6. Step 6: Final answer
    x = 479,130.71

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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.