Finding the Fourth Proportional to 1,351,623.36, 1,865,039.60 and 820,918.43
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Solution
The fourth proportional to 1,351,623.36, 1,865,039.60 and 820,918.43 is: 1,132,745.58
Step by Step Solution
- Step 1: Write the proportion equation
1,351,623.36 : 1,865,039.60 = 820,918.43 : x - Step 2: Convert to fraction form
1,351,623.36/1,865,039.60 = 820,918.43/x - Step 3: Cross multiply
1,351,623.36x = 1,865,039.60 × 820,918.43 - Step 4: Simplify right side
1,351,623.36x = 1,531,045,380,319.83 - Step 5: Solve for x
x = 1,531,045,380,319.83/1,351,623.36 - Step 6: Final answer
x = 1,132,745.58
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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.