Finding the Fourth Proportional to 528,837.36, 729,791.46 and 287,115.09
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Solution
The fourth proportional to 528,837.36, 729,791.46 and 287,115.09 is: 396,216.60
Step by Step Solution
- Step 1: Write the proportion equation
528,837.36 : 729,791.46 = 287,115.09 : x - Step 2: Convert to fraction form
528,837.36/729,791.46 = 287,115.09/x - Step 3: Cross multiply
528,837.36x = 729,791.46 × 287,115.09 - Step 4: Simplify right side
528,837.36x = 209,534,140,719.13 - Step 5: Solve for x
x = 209,534,140,719.13/528,837.36 - Step 6: Final answer
x = 396,216.60
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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.