Finding the Fourth Proportional to 861,102.62, 1,188,486.09 and 570,201.11
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Solution
The fourth proportional to 861,102.62, 1,188,486.09 and 570,201.11 is: 786,986.44
Step by Step Solution
- Step 1: Write the proportion equation
861,102.62 : 1,188,486.09 = 570,201.11 : x - Step 2: Convert to fraction form
861,102.62/1,188,486.09 = 570,201.11/x - Step 3: Cross multiply
861,102.62x = 1,188,486.09 × 570,201.11 - Step 4: Simplify right side
861,102.62x = 677,676,081,795.13 - Step 5: Solve for x
x = 677,676,081,795.13/861,102.62 - Step 6: Final answer
x = 786,986.44
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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.