Finding the Fourth Proportional to 5,186,975.79, 7,780,837.35 and 1,992,101.97
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Solution
The fourth proportional to 5,186,975.79, 7,780,837.35 and 1,992,101.97 is: 2,988,296.46
Step by Step Solution
- Step 1: Write the proportion equation
5,186,975.79 : 7,780,837.35 = 1,992,101.97 : x - Step 2: Convert to fraction form
5,186,975.79/7,780,837.35 = 1,992,101.97/x - Step 3: Cross multiply
5,186,975.79x = 7,780,837.35 × 1,992,101.97 - Step 4: Simplify right side
5,186,975.79x = 15,500,221,413,184.58 - Step 5: Solve for x
x = 15,500,221,413,184.58/5,186,975.79 - Step 6: Final answer
x = 2,988,296.46
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.