Finding the Fourth Proportional to 727,382.64, 1,003,708.44 and 421,465.08
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Solution
The fourth proportional to 727,382.64, 1,003,708.44 and 421,465.08 is: 581,575.69
Step by Step Solution
- Step 1: Write the proportion equation
727,382.64 : 1,003,708.44 = 421,465.08 : x - Step 2: Convert to fraction form
727,382.64/1,003,708.44 = 421,465.08/x - Step 3: Cross multiply
727,382.64x = 1,003,708.44 × 421,465.08 - Step 4: Simplify right side
727,382.64x = 423,028,057,961.28 - Step 5: Solve for x
x = 423,028,057,961.28/727,382.64 - Step 6: Final answer
x = 581,575.69
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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.