Finding the Fourth Proportional to 529,439.49, 730,644.09 and 311,608.68
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Solution
The fourth proportional to 529,439.49, 730,644.09 and 311,608.68 is: 430,030.33
Step by Step Solution
- Step 1: Write the proportion equation
529,439.49 : 730,644.09 = 311,608.68 : x - Step 2: Convert to fraction form
529,439.49/730,644.09 = 311,608.68/x - Step 3: Cross multiply
529,439.49x = 730,644.09 × 311,608.68 - Step 4: Simplify right side
529,439.49x = 227,675,040,434.70 - Step 5: Solve for x
x = 227,675,040,434.70/529,439.49 - Step 6: Final answer
x = 430,030.33
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.