Finding the Fourth Proportional to 657,687.80, 986,531.70 and 325,911.80
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Solution
The fourth proportional to 657,687.80, 986,531.70 and 325,911.80 is: 488,867.70
Step by Step Solution
- Step 1: Write the proportion equation
657,687.80 : 986,531.70 = 325,911.80 : x - Step 2: Convert to fraction form
657,687.80/986,531.70 = 325,911.80/x - Step 3: Cross multiply
657,687.80x = 986,531.70 × 325,911.80 - Step 4: Simplify right side
657,687.80x = 321,522,322,104.06 - Step 5: Solve for x
x = 321,522,322,104.06/657,687.80 - Step 6: Final answer
x = 488,867.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.