Finding the Fourth Proportional to 727,768.80, 1,004,201.28 and 405,406.08
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Solution
The fourth proportional to 727,768.80, 1,004,201.28 and 405,406.08 is: 559,393.73
Step by Step Solution
- Step 1: Write the proportion equation
727,768.80 : 1,004,201.28 = 405,406.08 : x - Step 2: Convert to fraction form
727,768.80/1,004,201.28 = 405,406.08/x - Step 3: Cross multiply
727,768.80x = 1,004,201.28 × 405,406.08 - Step 4: Simplify right side
727,768.80x = 407,109,304,455.78 - Step 5: Solve for x
x = 407,109,304,455.78/727,768.80 - Step 6: Final answer
x = 559,393.73
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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.