Finding the Fourth Proportional to 910,863.45, 1,366,299.81 and 378,385.05
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Solution
The fourth proportional to 910,863.45, 1,366,299.81 and 378,385.05 is: 567,579.50
Step by Step Solution
- Step 1: Write the proportion equation
910,863.45 : 1,366,299.81 = 378,385.05 : x - Step 2: Convert to fraction form
910,863.45/1,366,299.81 = 378,385.05/x - Step 3: Cross multiply
910,863.45x = 1,366,299.81 × 378,385.05 - Step 4: Simplify right side
910,863.45x = 516,987,421,921.84 - Step 5: Solve for x
x = 516,987,421,921.84/910,863.45 - Step 6: Final answer
x = 567,579.50
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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.