Finding the Fourth Proportional to 728,113.74, 1,004,801.63 and 405,844.28
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Solution
The fourth proportional to 728,113.74, 1,004,801.63 and 405,844.28 is: 560,067.70
Step by Step Solution
- Step 1: Write the proportion equation
728,113.74 : 1,004,801.63 = 405,844.28 : x - Step 2: Convert to fraction form
728,113.74/1,004,801.63 = 405,844.28/x - Step 3: Cross multiply
728,113.74x = 1,004,801.63 × 405,844.28 - Step 4: Simplify right side
728,113.74x = 407,792,989,299.82 - Step 5: Solve for x
x = 407,792,989,299.82/728,113.74 - Step 6: Final answer
x = 560,067.70
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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.