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Finding the Fourth Proportional to 660,195.52, 990,661.16 and 356,583.56

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Solution

The fourth proportional to 660,195.52, 990,661.16 and 356,583.56 is: 535,074.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,195.52 : 990,661.16 = 356,583.56 : x
  2. Step 2: Convert to fraction form
    660,195.52/990,661.16 = 356,583.56/x
  3. Step 3: Cross multiply
    660,195.52x = 990,661.16 × 356,583.56
  4. Step 4: Simplify right side
    660,195.52x = 353,253,479,124.68
  5. Step 5: Solve for x
    x = 353,253,479,124.68/660,195.52
  6. Step 6: Final answer
    x = 535,074.03

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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.