Finding the Fourth Proportional to 528,805.12, 729,759.84 and 287,087.68
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Solution
The fourth proportional to 528,805.12, 729,759.84 and 287,087.68 is: 396,185.76
Step by Step Solution
- Step 1: Write the proportion equation
528,805.12 : 729,759.84 = 287,087.68 : x - Step 2: Convert to fraction form
528,805.12/729,759.84 = 287,087.68/x - Step 3: Cross multiply
528,805.12x = 729,759.84 × 287,087.68 - Step 4: Simplify right side
528,805.12x = 209,505,059,422.77 - Step 5: Solve for x
x = 209,505,059,422.77/528,805.12 - Step 6: Final answer
x = 396,185.76
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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.