Finding the Fourth Proportional to 855,914,816.25, 1,284,311,511.77 and 407,725,771.95
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Solution
The fourth proportional to 855,914,816.25, 1,284,311,511.77 and 407,725,771.95 is: 611,797,917.99
Step by Step Solution
- Step 1: Write the proportion equation
855,914,816.25 : 1,284,311,511.77 = 407,725,771.95 : x - Step 2: Convert to fraction form
855,914,816.25/1,284,311,511.77 = 407,725,771.95/x - Step 3: Cross multiply
855,914,816.25x = 1,284,311,511.77 × 407,725,771.95 - Step 4: Simplify right side
855,914,816.25x = 523,646,902,558,656,128 - Step 5: Solve for x
x = 523,646,902,558,656,128/855,914,816.25 - Step 6: Final answer
x = 611,797,917.99
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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.