Finding the Fourth Proportional to 739,377,679.11, 1,107,305,912.13 and 427,828,717.43
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Solution
The fourth proportional to 739,377,679.11, 1,107,305,912.13 and 427,828,717.43 is: 640,724,330.17
Step by Step Solution
- Step 1: Write the proportion equation
739,377,679.11 : 1,107,305,912.13 = 427,828,717.43 : x - Step 2: Convert to fraction form
739,377,679.11/1,107,305,912.13 = 427,828,717.43/x - Step 3: Cross multiply
739,377,679.11x = 1,107,305,912.13 × 427,828,717.43 - Step 4: Simplify right side
739,377,679.11x = 473,737,268,186,267,072 - Step 5: Solve for x
x = 473,737,268,186,267,072/739,377,679.11 - Step 6: Final answer
x = 640,724,330.17
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1.5x scale
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.