Finding the Fourth Proportional to 878,269.75, 1,212,013.07 and 475,861.75
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Solution
The fourth proportional to 878,269.75, 1,212,013.07 and 475,861.75 is: 656,689.66
Step by Step Solution
- Step 1: Write the proportion equation
878,269.75 : 1,212,013.07 = 475,861.75 : x - Step 2: Convert to fraction form
878,269.75/1,212,013.07 = 475,861.75/x - Step 3: Cross multiply
878,269.75x = 1,212,013.07 × 475,861.75 - Step 4: Simplify right side
878,269.75x = 576,750,660,513.07 - Step 5: Solve for x
x = 576,750,660,513.07/878,269.75 - Step 6: Final answer
x = 656,689.66
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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.