Finding the Fourth Proportional to 728,177.41, 1,004,918.85 and 405,889.84
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Solution
The fourth proportional to 728,177.41, 1,004,918.85 and 405,889.84 is: 560,146.94
Step by Step Solution
- Step 1: Write the proportion equation
728,177.41 : 1,004,918.85 = 405,889.84 : x - Step 2: Convert to fraction form
728,177.41/1,004,918.85 = 405,889.84/x - Step 3: Cross multiply
728,177.41x = 1,004,918.85 × 405,889.84 - Step 4: Simplify right side
728,177.41x = 407,886,344,185.44 - Step 5: Solve for x
x = 407,886,344,185.44/728,177.41 - Step 6: Final answer
x = 560,146.94
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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.