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Finding the Fourth Proportional to 633,558.32, 874,310.46 and 378,909.50

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Solution

The fourth proportional to 633,558.32, 874,310.46 and 378,909.50 is: 522,895.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,558.32 : 874,310.46 = 378,909.50 : x
  2. Step 2: Convert to fraction form
    633,558.32/874,310.46 = 378,909.50/x
  3. Step 3: Cross multiply
    633,558.32x = 874,310.46 × 378,909.50
  4. Step 4: Simplify right side
    633,558.32x = 331,284,539,243.37
  5. Step 5: Solve for x
    x = 331,284,539,243.37/633,558.32
  6. Step 6: Final answer
    x = 522,895.10

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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.