Finding the Fourth Proportional to 690,709.98, 1,036,205.09 and 217,285.23
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Solution
The fourth proportional to 690,709.98, 1,036,205.09 and 217,285.23 is: 325,971.92
Step by Step Solution
- Step 1: Write the proportion equation
690,709.98 : 1,036,205.09 = 217,285.23 : x - Step 2: Convert to fraction form
690,709.98/1,036,205.09 = 217,285.23/x - Step 3: Cross multiply
690,709.98x = 1,036,205.09 × 217,285.23 - Step 4: Simplify right side
690,709.98x = 225,152,061,307.82 - Step 5: Solve for x
x = 225,152,061,307.82/690,709.98 - Step 6: Final answer
x = 325,971.92
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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.