Finding the Fourth Proportional to 728,116.09, 1,004,804.87 and 405,846.62
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Solution
The fourth proportional to 728,116.09, 1,004,804.87 and 405,846.62 is: 560,070.93
Step by Step Solution
- Step 1: Write the proportion equation
728,116.09 : 1,004,804.87 = 405,846.62 : x - Step 2: Convert to fraction form
728,116.09/1,004,804.87 = 405,846.62/x - Step 3: Cross multiply
728,116.09x = 1,004,804.87 × 405,846.62 - Step 4: Simplify right side
728,116.09x = 407,796,656,963.80 - Step 5: Solve for x
x = 407,796,656,963.80/728,116.09 - Step 6: Final answer
x = 560,070.93
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1.5x scale
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.