Finding the Fourth Proportional to 1,321,107,343.80, 1,981,661,015.70 and 885,750,876.60
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Solution
The fourth proportional to 1,321,107,343.80, 1,981,661,015.70 and 885,750,876.60 is: 1,328,626,314.90
Step by Step Solution
- Step 1: Write the proportion equation
1,321,107,343.80 : 1,981,661,015.70 = 885,750,876.60 : x - Step 2: Convert to fraction form
1,321,107,343.80/1,981,661,015.70 = 885,750,876.60/x - Step 3: Cross multiply
1,321,107,343.80x = 1,981,661,015.70 × 885,750,876.60 - Step 4: Simplify right side
1,321,107,343.80x = 1,755,257,981,780,321,536 - Step 5: Solve for x
x = 1,755,257,981,780,321,536/1,321,107,343.80 - Step 6: Final answer
x = 1,328,626,314.90
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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.