Finding the Fourth Proportional to 1,218,713.81, 1,681,823.99 and 674,849.57
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Solution
The fourth proportional to 1,218,713.81, 1,681,823.99 and 674,849.57 is: 931,291.81
Step by Step Solution
- Step 1: Write the proportion equation
1,218,713.81 : 1,681,823.99 = 674,849.57 : x - Step 2: Convert to fraction form
1,218,713.81/1,681,823.99 = 674,849.57/x - Step 3: Cross multiply
1,218,713.81x = 1,681,823.99 × 674,849.57 - Step 4: Simplify right side
1,218,713.81x = 1,134,978,189,745.19 - Step 5: Solve for x
x = 1,134,978,189,745.19/1,218,713.81 - Step 6: Final answer
x = 931,291.81
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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.