Finding the Fourth Proportional to 5,186,976.81, 7,780,838.91 and 1,992,102.98
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Solution
The fourth proportional to 5,186,976.81, 7,780,838.91 and 1,992,102.98 is: 2,988,297.99
Step by Step Solution
- Step 1: Write the proportion equation
5,186,976.81 : 7,780,838.91 = 1,992,102.98 : x - Step 2: Convert to fraction form
5,186,976.81/7,780,838.91 = 1,992,102.98/x - Step 3: Cross multiply
5,186,976.81x = 7,780,838.91 × 1,992,102.98 - Step 4: Simplify right side
5,186,976.81x = 15,500,232,376,903.59 - Step 5: Solve for x
x = 15,500,232,376,903.59/5,186,976.81 - Step 6: Final answer
x = 2,988,297.99
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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.