Finding the Fourth Proportional to 1,121,236.40, 1,548,593.40 and 816,669.68
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Solution
The fourth proportional to 1,121,236.40, 1,548,593.40 and 816,669.68 is: 1,127,941.69
Step by Step Solution
- Step 1: Write the proportion equation
1,121,236.40 : 1,548,593.40 = 816,669.68 : x - Step 2: Convert to fraction form
1,121,236.40/1,548,593.40 = 816,669.68/x - Step 3: Cross multiply
1,121,236.40x = 1,548,593.40 × 816,669.68 - Step 4: Simplify right side
1,121,236.40x = 1,264,689,276,428.11 - Step 5: Solve for x
x = 1,264,689,276,428.11/1,121,236.40 - Step 6: Final answer
x = 1,127,941.69
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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.