Finding the Fourth Proportional to 6,318,379,917.20, 8,719,638,371.88 and 3,498,987,843.20
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Solution
The fourth proportional to 6,318,379,917.20, 8,719,638,371.88 and 3,498,987,843.20 is: 4,828,755,006.84
Step by Step Solution
- Step 1: Write the proportion equation
6,318,379,917.20 : 8,719,638,371.88 = 3,498,987,843.20 : x - Step 2: Convert to fraction form
6,318,379,917.20/8,719,638,371.88 = 3,498,987,843.20/x - Step 3: Cross multiply
6,318,379,917.20x = 8,719,638,371.88 × 3,498,987,843.20 - Step 4: Simplify right side
6,318,379,917.20x = 30,509,908,660,308,357,120 - Step 5: Solve for x
x = 30,509,908,660,308,357,120/6,318,379,917.20 - Step 6: Final answer
x = 4,828,755,006.84
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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.