Finding the Fourth Proportional to 430,087.70, 644,548.35 and 287,527.70
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Solution
The fourth proportional to 430,087.70, 644,548.35 and 287,527.70 is: 430,901.66
Step by Step Solution
- Step 1: Write the proportion equation
430,087.70 : 644,548.35 = 287,527.70 : x - Step 2: Convert to fraction form
430,087.70/644,548.35 = 287,527.70/x - Step 3: Cross multiply
430,087.70x = 644,548.35 × 287,527.70 - Step 4: Simplify right side
430,087.70x = 185,325,504,614.30 - Step 5: Solve for x
x = 185,325,504,614.30/430,087.70 - Step 6: Final answer
x = 430,901.66
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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.