Finding the Fourth Proportional to 878,971.38, 1,212,309.63 and 756,664.62
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Solution
The fourth proportional to 878,971.38, 1,212,309.63 and 756,664.62 is: 1,043,619.65
Step by Step Solution
- Step 1: Write the proportion equation
878,971.38 : 1,212,309.63 = 756,664.62 : x - Step 2: Convert to fraction form
878,971.38/1,212,309.63 = 756,664.62/x - Step 3: Cross multiply
878,971.38x = 1,212,309.63 × 756,664.62 - Step 4: Simplify right side
878,971.38x = 917,311,805,506.29 - Step 5: Solve for x
x = 917,311,805,506.29/878,971.38 - Step 6: Final answer
x = 1,043,619.65
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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.