Finding the Fourth Proportional to 7,147,922.20, 10,721,883.30 and 4,306,571.80
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Solution
The fourth proportional to 7,147,922.20, 10,721,883.30 and 4,306,571.80 is: 6,459,857.70
Step by Step Solution
- Step 1: Write the proportion equation
7,147,922.20 : 10,721,883.30 = 4,306,571.80 : x - Step 2: Convert to fraction form
7,147,922.20/10,721,883.30 = 4,306,571.80/x - Step 3: Cross multiply
7,147,922.20x = 10,721,883.30 × 4,306,571.80 - Step 4: Simplify right side
7,147,922.20x = 46,174,560,262,670.94 - Step 5: Solve for x
x = 46,174,560,262,670.94/7,147,922.20 - Step 6: Final answer
x = 6,459,857.70
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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.