Finding the Fourth Proportional to 1,072,976.49, 1,609,215.03 and 399,375.09
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Solution
The fourth proportional to 1,072,976.49, 1,609,215.03 and 399,375.09 is: 598,969.69
Step by Step Solution
- Step 1: Write the proportion equation
1,072,976.49 : 1,609,215.03 = 399,375.09 : x - Step 2: Convert to fraction form
1,072,976.49/1,609,215.03 = 399,375.09/x - Step 3: Cross multiply
1,072,976.49x = 1,609,215.03 × 399,375.09 - Step 4: Simplify right side
1,072,976.49x = 642,680,397,435.60 - Step 5: Solve for x
x = 642,680,397,435.60/1,072,976.49 - Step 6: Final answer
x = 598,969.69
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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.