Finding the Fourth Proportional to 643,168.63, 965,331.18 and 343,905.01
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Solution
The fourth proportional to 643,168.63, 965,331.18 and 343,905.01 is: 516,166.70
Step by Step Solution
- Step 1: Write the proportion equation
643,168.63 : 965,331.18 = 343,905.01 : x - Step 2: Convert to fraction form
643,168.63/965,331.18 = 343,905.01/x - Step 3: Cross multiply
643,168.63x = 965,331.18 × 343,905.01 - Step 4: Simplify right side
643,168.63x = 331,982,229,111.21 - Step 5: Solve for x
x = 331,982,229,111.21/643,168.63 - Step 6: Final answer
x = 516,166.70
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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.