Finding the Fourth Proportional to 810,430.20, 1,214,902.20 and 311,418.36
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Solution
The fourth proportional to 810,430.20, 1,214,902.20 and 311,418.36 is: 466,841.99
Step by Step Solution
- Step 1: Write the proportion equation
810,430.20 : 1,214,902.20 = 311,418.36 : x - Step 2: Convert to fraction form
810,430.20/1,214,902.20 = 311,418.36/x - Step 3: Cross multiply
810,430.20x = 1,214,902.20 × 311,418.36 - Step 4: Simplify right side
810,430.20x = 378,342,850,684.39 - Step 5: Solve for x
x = 378,342,850,684.39/810,430.20 - Step 6: Final answer
x = 466,841.99
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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.