Finding the Fourth Proportional to 1,398,196.29, 2,087,087.08 and 1,199,791.65
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Solution
The fourth proportional to 1,398,196.29, 2,087,087.08 and 1,199,791.65 is: 1,790,928.55
Step by Step Solution
- Step 1: Write the proportion equation
1,398,196.29 : 2,087,087.08 = 1,199,791.65 : x - Step 2: Convert to fraction form
1,398,196.29/2,087,087.08 = 1,199,791.65/x - Step 3: Cross multiply
1,398,196.29x = 2,087,087.08 × 1,199,791.65 - Step 4: Simplify right side
1,398,196.29x = 2,504,069,651,406.88 - Step 5: Solve for x
x = 2,504,069,651,406.88/1,398,196.29 - Step 6: Final answer
x = 1,790,928.55
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.