Finding the Fourth Proportional to 713,804.75, 985,138.05 and 411,998.75
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Solution
The fourth proportional to 713,804.75, 985,138.05 and 411,998.75 is: 568,608.78
Step by Step Solution
- Step 1: Write the proportion equation
713,804.75 : 985,138.05 = 411,998.75 : x - Step 2: Convert to fraction form
713,804.75/985,138.05 = 411,998.75/x - Step 3: Cross multiply
713,804.75x = 985,138.05 × 411,998.75 - Step 4: Simplify right side
713,804.75x = 405,875,645,177.44 - Step 5: Solve for x
x = 405,875,645,177.44/713,804.75 - Step 6: Final answer
x = 568,608.78
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Double scale
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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.