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Finding the Fourth Proportional to 660,168.56, 990,627.36 and 356,558.96

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Solution

The fourth proportional to 660,168.56, 990,627.36 and 356,558.96 is: 535,040.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,168.56 : 990,627.36 = 356,558.96 : x
  2. Step 2: Convert to fraction form
    660,168.56/990,627.36 = 356,558.96/x
  3. Step 3: Cross multiply
    660,168.56x = 990,627.36 × 356,558.96
  4. Step 4: Simplify right side
    660,168.56x = 353,217,061,229.15
  5. Step 5: Solve for x
    x = 353,217,061,229.15/660,168.56
  6. Step 6: Final answer
    x = 535,040.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.