Finding the Fourth Proportional to 757,892.72, 1,135,887.05 and 378,918.96
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Solution
The fourth proportional to 757,892.72, 1,135,887.05 and 378,918.96 is: 567,902.46
Step by Step Solution
- Step 1: Write the proportion equation
757,892.72 : 1,135,887.05 = 378,918.96 : x - Step 2: Convert to fraction form
757,892.72/1,135,887.05 = 378,918.96/x - Step 3: Cross multiply
757,892.72x = 1,135,887.05 × 378,918.96 - Step 4: Simplify right side
757,892.72x = 430,409,137,768.87 - Step 5: Solve for x
x = 430,409,137,768.87/757,892.72 - Step 6: Final answer
x = 567,902.46
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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.