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Finding the Fourth Proportional to 660,169.56, 990,628.86 and 356,559.96

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Solution

The fourth proportional to 660,169.56, 990,628.86 and 356,559.96 is: 535,042.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,169.56 : 990,628.86 = 356,559.96 : x
  2. Step 2: Convert to fraction form
    660,169.56/990,628.86 = 356,559.96/x
  3. Step 3: Cross multiply
    660,169.56x = 990,628.86 × 356,559.96
  4. Step 4: Simplify right side
    660,169.56x = 353,218,586,696.45
  5. Step 5: Solve for x
    x = 353,218,586,696.45/660,169.56
  6. Step 6: Final answer
    x = 535,042.22

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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.