Finding the Fourth Proportional to 2,085,181,208.40, 3,128,905,553.40 and 858,473,662.80
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Solution
The fourth proportional to 2,085,181,208.40, 3,128,905,553.40 and 858,473,662.80 is: 1,288,177,257.77
Step by Step Solution
- Step 1: Write the proportion equation
2,085,181,208.40 : 3,128,905,553.40 = 858,473,662.80 : x - Step 2: Convert to fraction form
2,085,181,208.40/3,128,905,553.40 = 858,473,662.80/x - Step 3: Cross multiply
2,085,181,208.40x = 3,128,905,553.40 × 858,473,662.80 - Step 4: Simplify right side
2,085,181,208.40x = 2,686,083,010,982,558,720 - Step 5: Solve for x
x = 2,686,083,010,982,558,720/2,085,181,208.40 - Step 6: Final answer
x = 1,288,177,257.77
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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.