Finding the Fourth Proportional to 5,122,356.60, 7,678,286.10 and 2,991,343.80
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Solution
The fourth proportional to 5,122,356.60, 7,678,286.10 and 2,991,343.80 is: 4,483,950.52
Step by Step Solution
- Step 1: Write the proportion equation
5,122,356.60 : 7,678,286.10 = 2,991,343.80 : x - Step 2: Convert to fraction form
5,122,356.60/7,678,286.10 = 2,991,343.80/x - Step 3: Cross multiply
5,122,356.60x = 7,678,286.10 × 2,991,343.80 - Step 4: Simplify right side
5,122,356.60x = 22,968,393,519,861.18 - Step 5: Solve for x
x = 22,968,393,519,861.18/5,122,356.60 - Step 6: Final answer
x = 4,483,950.52
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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.