Finding the Fourth Proportional to 5,217,295.20, 7,816,611.60 and 3,220,418.40
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Solution
The fourth proportional to 5,217,295.20, 7,816,611.60 and 3,220,418.40 is: 4,824,867.84
Step by Step Solution
- Step 1: Write the proportion equation
5,217,295.20 : 7,816,611.60 = 3,220,418.40 : x - Step 2: Convert to fraction form
5,217,295.20/7,816,611.60 = 3,220,418.40/x - Step 3: Cross multiply
5,217,295.20x = 7,816,611.60 × 3,220,418.40 - Step 4: Simplify right side
5,217,295.20x = 25,172,759,822,293.44 - Step 5: Solve for x
x = 25,172,759,822,293.44/5,217,295.20 - Step 6: Final answer
x = 4,824,867.84
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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.