Finding the Fourth Proportional to 1,186,486.09, 1,637,342.56 and 642,609.49
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Solution
The fourth proportional to 1,186,486.09, 1,637,342.56 and 642,609.49 is: 886,796.63
Step by Step Solution
- Step 1: Write the proportion equation
1,186,486.09 : 1,637,342.56 = 642,609.49 : x - Step 2: Convert to fraction form
1,186,486.09/1,637,342.56 = 642,609.49/x - Step 3: Cross multiply
1,186,486.09x = 1,637,342.56 × 642,609.49 - Step 4: Simplify right side
1,186,486.09x = 1,052,171,867,436.89 - Step 5: Solve for x
x = 1,052,171,867,436.89/1,186,486.09 - Step 6: Final answer
x = 886,796.63
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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.