Finding the Fourth Proportional to 738,364.41, 1,018,942.74 and 398,832.66
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Solution
The fourth proportional to 738,364.41, 1,018,942.74 and 398,832.66 is: 550,388.99
Step by Step Solution
- Step 1: Write the proportion equation
738,364.41 : 1,018,942.74 = 398,832.66 : x - Step 2: Convert to fraction form
738,364.41/1,018,942.74 = 398,832.66/x - Step 3: Cross multiply
738,364.41x = 1,018,942.74 × 398,832.66 - Step 4: Simplify right side
738,364.41x = 406,387,643,381.89 - Step 5: Solve for x
x = 406,387,643,381.89/738,364.41 - Step 6: Final answer
x = 550,388.99
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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.