Finding the Fourth Proportional to 5,211,208.40, 7,816,423.80 and 2,177,790.80
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Solution
The fourth proportional to 5,211,208.40, 7,816,423.80 and 2,177,790.80 is: 3,266,523.72
Step by Step Solution
- Step 1: Write the proportion equation
5,211,208.40 : 7,816,423.80 = 2,177,790.80 : x - Step 2: Convert to fraction form
5,211,208.40/7,816,423.80 = 2,177,790.80/x - Step 3: Cross multiply
5,211,208.40x = 7,816,423.80 × 2,177,790.80 - Step 4: Simplify right side
5,211,208.40x = 17,022,535,840,541.04 - Step 5: Solve for x
x = 17,022,535,840,541.04/5,211,208.40 - Step 6: Final answer
x = 3,266,523.72
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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.