Finding the Fourth Proportional to 1,218,716.99, 1,681,808.78 and 674,841.11
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Solution
The fourth proportional to 1,218,716.99, 1,681,808.78 and 674,841.11 is: 931,269.28
Step by Step Solution
- Step 1: Write the proportion equation
1,218,716.99 : 1,681,808.78 = 674,841.11 : x - Step 2: Convert to fraction form
1,218,716.99/1,681,808.78 = 674,841.11/x - Step 3: Cross multiply
1,218,716.99x = 1,681,808.78 × 674,841.11 - Step 4: Simplify right side
1,218,716.99x = 1,134,953,693,385.02 - Step 5: Solve for x
x = 1,134,953,693,385.02/1,218,716.99 - Step 6: Final answer
x = 931,269.28
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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.