Finding the Fourth Proportional to 728,115.97, 1,004,804.70 and 405,846.50
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Solution
The fourth proportional to 728,115.97, 1,004,804.70 and 405,846.50 is: 560,070.77
Step by Step Solution
- Step 1: Write the proportion equation
728,115.97 : 1,004,804.70 = 405,846.50 : x - Step 2: Convert to fraction form
728,115.97/1,004,804.70 = 405,846.50/x - Step 3: Cross multiply
728,115.97x = 1,004,804.70 × 405,846.50 - Step 4: Simplify right side
728,115.97x = 407,796,470,678.55 - Step 5: Solve for x
x = 407,796,470,678.55/728,115.97 - Step 6: Final answer
x = 560,070.77
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.