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Finding the Fourth Proportional to 633,561.32, 874,314.60 and 378,912.50

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Solution

The fourth proportional to 633,561.32, 874,314.60 and 378,912.50 is: 522,899.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,561.32 : 874,314.60 = 378,912.50 : x
  2. Step 2: Convert to fraction form
    633,561.32/874,314.60 = 378,912.50/x
  3. Step 3: Cross multiply
    633,561.32x = 874,314.60 × 378,912.50
  4. Step 4: Simplify right side
    633,561.32x = 331,288,730,872.50
  5. Step 5: Solve for x
    x = 331,288,730,872.50/633,561.32
  6. Step 6: Final answer
    x = 522,899.24

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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.