Finding the Fourth Proportional to 1,208,469.38, 1,667,728.44 and 664,628.09
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Solution
The fourth proportional to 1,208,469.38, 1,667,728.44 and 664,628.09 is: 917,209.14
Step by Step Solution
- Step 1: Write the proportion equation
1,208,469.38 : 1,667,728.44 = 664,628.09 : x - Step 2: Convert to fraction form
1,208,469.38/1,667,728.44 = 664,628.09/x - Step 3: Cross multiply
1,208,469.38x = 1,667,728.44 × 664,628.09 - Step 4: Simplify right side
1,208,469.38x = 1,108,419,159,377.24 - Step 5: Solve for x
x = 1,108,419,159,377.24/1,208,469.38 - Step 6: Final answer
x = 917,209.14
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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.