Finding the Fourth Proportional to 664,433.70, 916,599.69 and 434,889.96
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Solution
The fourth proportional to 664,433.70, 916,599.69 and 434,889.96 is: 599,939.47
Step by Step Solution
- Step 1: Write the proportion equation
664,433.70 : 916,599.69 = 434,889.96 : x - Step 2: Convert to fraction form
664,433.70/916,599.69 = 434,889.96/x - Step 3: Cross multiply
664,433.70x = 916,599.69 × 434,889.96 - Step 4: Simplify right side
664,433.70x = 398,620,002,520.11 - Step 5: Solve for x
x = 398,620,002,520.11/664,433.70 - Step 6: Final answer
x = 599,939.47
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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.