Finding the Fourth Proportional to 5,728,239.81, 7,904,961.32 and 3,281,642.91
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Solution
The fourth proportional to 5,728,239.81, 7,904,961.32 and 3,281,642.91 is: 4,528,661.70
Step by Step Solution
- Step 1: Write the proportion equation
5,728,239.81 : 7,904,961.32 = 3,281,642.91 : x - Step 2: Convert to fraction form
5,728,239.81/7,904,961.32 = 3,281,642.91/x - Step 3: Cross multiply
5,728,239.81x = 7,904,961.32 × 3,281,642.91 - Step 4: Simplify right side
5,728,239.81x = 25,941,260,253,194.03 - Step 5: Solve for x
x = 25,941,260,253,194.03/5,728,239.81 - Step 6: Final answer
x = 4,528,661.70
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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.