Finding the Fourth Proportional to 2,165,381.19, 2,988,178.97 and 1,198,453.41
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Solution
The fourth proportional to 2,165,381.19, 2,988,178.97 and 1,198,453.41 is: 1,653,839.65
Step by Step Solution
- Step 1: Write the proportion equation
2,165,381.19 : 2,988,178.97 = 1,198,453.41 : x - Step 2: Convert to fraction form
2,165,381.19/2,988,178.97 = 1,198,453.41/x - Step 3: Cross multiply
2,165,381.19x = 2,988,178.97 × 1,198,453.41 - Step 4: Simplify right side
2,165,381.19x = 3,581,193,270,294.52 - Step 5: Solve for x
x = 3,581,193,270,294.52/2,165,381.19 - Step 6: Final answer
x = 1,653,839.65
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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.