Finding the Fourth Proportional to 528,100.49, 728,778.84 and 286,382.99
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Solution
The fourth proportional to 528,100.49, 728,778.84 and 286,382.99 is: 395,208.61
Step by Step Solution
- Step 1: Write the proportion equation
528,100.49 : 728,778.84 = 286,382.99 : x - Step 2: Convert to fraction form
528,100.49/728,778.84 = 286,382.99/x - Step 3: Cross multiply
528,100.49x = 728,778.84 × 286,382.99 - Step 4: Simplify right side
528,100.49x = 208,709,859,604.04 - Step 5: Solve for x
x = 208,709,859,604.04/528,100.49 - Step 6: Final answer
x = 395,208.61
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1.5x scale
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.