Finding the Fourth Proportional to 638,366.81, 880,945.97 and 351,891.68
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Solution
The fourth proportional to 638,366.81, 880,945.97 and 351,891.68 is: 485,610.39
Step by Step Solution
- Step 1: Write the proportion equation
638,366.81 : 880,945.97 = 351,891.68 : x - Step 2: Convert to fraction form
638,366.81/880,945.97 = 351,891.68/x - Step 3: Cross multiply
638,366.81x = 880,945.97 × 351,891.68 - Step 4: Simplify right side
638,366.81x = 309,997,551,208.34 - Step 5: Solve for x
x = 309,997,551,208.34/638,366.81 - Step 6: Final answer
x = 485,610.39
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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.