Finding the Fourth Proportional to 738,742.83, 1,019,465.08 and 399,211.08
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Solution
The fourth proportional to 738,742.83, 1,019,465.08 and 399,211.08 is: 550,911.28
Step by Step Solution
- Step 1: Write the proportion equation
738,742.83 : 1,019,465.08 = 399,211.08 : x - Step 2: Convert to fraction form
738,742.83/1,019,465.08 = 399,211.08/x - Step 3: Cross multiply
738,742.83x = 1,019,465.08 × 399,211.08 - Step 4: Simplify right side
738,742.83x = 406,981,755,609.09 - Step 5: Solve for x
x = 406,981,755,609.09/738,742.83 - Step 6: Final answer
x = 550,911.28
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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.