Finding the Fourth Proportional to 1,643,915,220.05, 2,268,848,635.67 and 1,294,123,411.05
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Solution
The fourth proportional to 1,643,915,220.05, 2,268,848,635.67 and 1,294,123,411.05 is: 1,786,083,673.75
Step by Step Solution
- Step 1: Write the proportion equation
1,643,915,220.05 : 2,268,848,635.67 = 1,294,123,411.05 : x - Step 2: Convert to fraction form
1,643,915,220.05/2,268,848,635.67 = 1,294,123,411.05/x - Step 3: Cross multiply
1,643,915,220.05x = 2,268,848,635.67 × 1,294,123,411.05 - Step 4: Simplify right side
1,643,915,220.05x = 2,936,170,135,549,698,048 - Step 5: Solve for x
x = 2,936,170,135,549,698,048/1,643,915,220.05 - Step 6: Final answer
x = 1,786,083,673.75
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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.