Finding the Fourth Proportional to 528,809.92, 729,757.69 and 287,092.49
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Solution
The fourth proportional to 528,809.92, 729,757.69 and 287,092.49 is: 396,187.63
Step by Step Solution
- Step 1: Write the proportion equation
528,809.92 : 729,757.69 = 287,092.49 : x - Step 2: Convert to fraction form
528,809.92/729,757.69 = 287,092.49/x - Step 3: Cross multiply
528,809.92x = 729,757.69 × 287,092.49 - Step 4: Simplify right side
528,809.92x = 209,507,947,952.23 - Step 5: Solve for x
x = 209,507,947,952.23/528,809.92 - Step 6: Final answer
x = 396,187.63
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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.