Finding the Fourth Proportional to 485,840.26, 670,112.49 and 421,193.94
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Solution
The fourth proportional to 485,840.26, 670,112.49 and 421,193.94 is: 580,946.75
Step by Step Solution
- Step 1: Write the proportion equation
485,840.26 : 670,112.49 = 421,193.94 : x - Step 2: Convert to fraction form
485,840.26/670,112.49 = 421,193.94/x - Step 3: Cross multiply
485,840.26x = 670,112.49 × 421,193.94 - Step 4: Simplify right side
485,840.26x = 282,247,319,906.31 - Step 5: Solve for x
x = 282,247,319,906.31/485,840.26 - Step 6: Final answer
x = 580,946.75
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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.