Finding the Fourth Proportional to 528,628.26, 729,512.31 and 286,912.98
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Solution
The fourth proportional to 528,628.26, 729,512.31 and 286,912.98 is: 395,942.80
Step by Step Solution
- Step 1: Write the proportion equation
528,628.26 : 729,512.31 = 286,912.98 : x - Step 2: Convert to fraction form
528,628.26/729,512.31 = 286,912.98/x - Step 3: Cross multiply
528,628.26x = 729,512.31 × 286,912.98 - Step 4: Simplify right side
528,628.26x = 209,306,550,808.78 - Step 5: Solve for x
x = 209,306,550,808.78/528,628.26 - Step 6: Final answer
x = 395,942.80
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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.