Finding the Fourth Proportional to 721,523.16, 1,081,102.68 and 384,205.68
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Solution
The fourth proportional to 721,523.16, 1,081,102.68 and 384,205.68 is: 575,679.08
Step by Step Solution
- Step 1: Write the proportion equation
721,523.16 : 1,081,102.68 = 384,205.68 : x - Step 2: Convert to fraction form
721,523.16/1,081,102.68 = 384,205.68/x - Step 3: Cross multiply
721,523.16x = 1,081,102.68 × 384,205.68 - Step 4: Simplify right side
721,523.16x = 415,365,790,319.22 - Step 5: Solve for x
x = 415,365,790,319.22/721,523.16 - Step 6: Final answer
x = 575,679.08
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1.5x scale
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.