Finding the Fourth Proportional to 685,194.18, 1,027,437.14 and 300,785.70
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Solution
The fourth proportional to 685,194.18, 1,027,437.14 and 300,785.70 is: 451,023.09
Step by Step Solution
- Step 1: Write the proportion equation
685,194.18 : 1,027,437.14 = 300,785.70 : x - Step 2: Convert to fraction form
685,194.18/1,027,437.14 = 300,785.70/x - Step 3: Cross multiply
685,194.18x = 1,027,437.14 × 300,785.70 - Step 4: Simplify right side
685,194.18x = 309,038,397,856.97 - Step 5: Solve for x
x = 309,038,397,856.97/685,194.18 - Step 6: Final answer
x = 451,023.09
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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.