Finding the Fourth Proportional to 3,915,314,191.08, 5,403,276,143.82 and 2,131,081,405.02
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Solution
The fourth proportional to 3,915,314,191.08, 5,403,276,143.82 and 2,131,081,405.02 is: 2,940,969,933.53
Step by Step Solution
- Step 1: Write the proportion equation
3,915,314,191.08 : 5,403,276,143.82 = 2,131,081,405.02 : x - Step 2: Convert to fraction form
3,915,314,191.08/5,403,276,143.82 = 2,131,081,405.02/x - Step 3: Cross multiply
3,915,314,191.08x = 5,403,276,143.82 × 2,131,081,405.02 - Step 4: Simplify right side
3,915,314,191.08x = 11,514,821,316,282,972,160 - Step 5: Solve for x
x = 11,514,821,316,282,972,160/3,915,314,191.08 - Step 6: Final answer
x = 2,940,969,933.53
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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.