Finding the Fourth Proportional to 858,987.70, 1,288,481.55 and 839,304.70
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Solution
The fourth proportional to 858,987.70, 1,288,481.55 and 839,304.70 is: 1,258,957.05
Step by Step Solution
- Step 1: Write the proportion equation
858,987.70 : 1,288,481.55 = 839,304.70 : x - Step 2: Convert to fraction form
858,987.70/1,288,481.55 = 839,304.70/x - Step 3: Cross multiply
858,987.70x = 1,288,481.55 × 839,304.70 - Step 4: Simplify right side
858,987.70x = 1,081,428,620,778.29 - Step 5: Solve for x
x = 1,081,428,620,778.29/858,987.70 - Step 6: Final answer
x = 1,258,957.05
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.