Finding the Fourth Proportional to 621,765.75, 858,036.75 and 353,493.75
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Solution
The fourth proportional to 621,765.75, 858,036.75 and 353,493.75 is: 487,821.38
Step by Step Solution
- Step 1: Write the proportion equation
621,765.75 : 858,036.75 = 353,493.75 : x - Step 2: Convert to fraction form
621,765.75/858,036.75 = 353,493.75/x - Step 3: Cross multiply
621,765.75x = 858,036.75 × 353,493.75 - Step 4: Simplify right side
621,765.75x = 303,310,628,395.31 - Step 5: Solve for x
x = 303,310,628,395.31/621,765.75 - Step 6: Final answer
x = 487,821.38
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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.