Finding the Fourth Proportional to 1,248,715,625.49, 1,873,188,576.87 and 408,362,728.10
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Solution
The fourth proportional to 1,248,715,625.49, 1,873,188,576.87 and 408,362,728.10 is: 612,581,745.50
Step by Step Solution
- Step 1: Write the proportion equation
1,248,715,625.49 : 1,873,188,576.87 = 408,362,728.10 : x - Step 2: Convert to fraction form
1,248,715,625.49/1,873,188,576.87 = 408,362,728.10/x - Step 3: Cross multiply
1,248,715,625.49x = 1,873,188,576.87 × 408,362,728.10 - Step 4: Simplify right side
1,248,715,625.49x = 764,940,397,496,866,688 - Step 5: Solve for x
x = 764,940,397,496,866,688/1,248,715,625.49 - Step 6: Final answer
x = 612,581,745.50
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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.