Finding the Fourth Proportional to 1,987,081,227.46, 2,742,190,228.65 and 1,095,039,960.31
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Solution
The fourth proportional to 1,987,081,227.46, 2,742,190,228.65 and 1,095,039,960.31 is: 1,511,165,138.92
Step by Step Solution
- Step 1: Write the proportion equation
1,987,081,227.46 : 2,742,190,228.65 = 1,095,039,960.31 : x - Step 2: Convert to fraction form
1,987,081,227.46/2,742,190,228.65 = 1,095,039,960.31/x - Step 3: Cross multiply
1,987,081,227.46x = 2,742,190,228.65 × 1,095,039,960.31 - Step 4: Simplify right side
1,987,081,227.46x = 3,002,807,879,143,365,632 - Step 5: Solve for x
x = 3,002,807,879,143,365,632/1,987,081,227.46 - Step 6: Final answer
x = 1,511,165,138.92
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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.