Finding the Fourth Proportional to 919,296.24, 1,378,944.48 and 288,258.72
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Solution
The fourth proportional to 919,296.24, 1,378,944.48 and 288,258.72 is: 432,388.12
Step by Step Solution
- Step 1: Write the proportion equation
919,296.24 : 1,378,944.48 = 288,258.72 : x - Step 2: Convert to fraction form
919,296.24/1,378,944.48 = 288,258.72/x - Step 3: Cross multiply
919,296.24x = 1,378,944.48 × 288,258.72 - Step 4: Simplify right side
919,296.24x = 397,492,770,755.87 - Step 5: Solve for x
x = 397,492,770,755.87/919,296.24 - Step 6: Final answer
x = 432,388.12
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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.