Finding the Fourth Proportional to 716,091.58, 988,186.67 and 393,801.68
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Solution
The fourth proportional to 716,091.58, 988,186.67 and 393,801.68 is: 543,435.48
Step by Step Solution
- Step 1: Write the proportion equation
716,091.58 : 988,186.67 = 393,801.68 : x - Step 2: Convert to fraction form
716,091.58/988,186.67 = 393,801.68/x - Step 3: Cross multiply
716,091.58x = 988,186.67 × 393,801.68 - Step 4: Simplify right side
716,091.58x = 389,149,566,843.18 - Step 5: Solve for x
x = 389,149,566,843.18/716,091.58 - Step 6: Final answer
x = 543,435.48
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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.