Finding the Fourth Proportional to 623,664.09, 860,789.97 and 394,075.60
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Solution
The fourth proportional to 623,664.09, 860,789.97 and 394,075.60 is: 543,908.70
Step by Step Solution
- Step 1: Write the proportion equation
623,664.09 : 860,789.97 = 394,075.60 : x - Step 2: Convert to fraction form
623,664.09/860,789.97 = 394,075.60/x - Step 3: Cross multiply
623,664.09x = 860,789.97 × 394,075.60 - Step 4: Simplify right side
623,664.09x = 339,216,321,749.76 - Step 5: Solve for x
x = 339,216,321,749.76/623,664.09 - Step 6: Final answer
x = 543,908.70
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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.