Finding the Fourth Proportional to 1,953,474,081.80, 2,930,211,122.70 and 726,388,622.60
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Solution
The fourth proportional to 1,953,474,081.80, 2,930,211,122.70 and 726,388,622.60 is: 1,089,582,933.90
Step by Step Solution
- Step 1: Write the proportion equation
1,953,474,081.80 : 2,930,211,122.70 = 726,388,622.60 : x - Step 2: Convert to fraction form
1,953,474,081.80/2,930,211,122.70 = 726,388,622.60/x - Step 3: Cross multiply
1,953,474,081.80x = 2,930,211,122.70 × 726,388,622.60 - Step 4: Simplify right side
1,953,474,081.80x = 2,128,472,021,345,252,608 - Step 5: Solve for x
x = 2,128,472,021,345,252,608/1,953,474,081.80 - Step 6: Final answer
x = 1,089,582,933.90
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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.