Finding the Fourth Proportional to 831,364.30, 1,147,283.07 and 449,391.08
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Solution
The fourth proportional to 831,364.30, 1,147,283.07 and 449,391.08 is: 620,159.87
Step by Step Solution
- Step 1: Write the proportion equation
831,364.30 : 1,147,283.07 = 449,391.08 : x - Step 2: Convert to fraction form
831,364.30/1,147,283.07 = 449,391.08/x - Step 3: Cross multiply
831,364.30x = 1,147,283.07 × 449,391.08 - Step 4: Simplify right side
831,364.30x = 515,578,777,893.02 - Step 5: Solve for x
x = 515,578,777,893.02/831,364.30 - Step 6: Final answer
x = 620,159.87
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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.