Finding the Fourth Proportional to 3,969,912,951.95, 5,955,757,524.88 and 1,209,757,988.75
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Solution
The fourth proportional to 3,969,912,951.95, 5,955,757,524.88 and 1,209,757,988.75 is: 1,814,907,614.34
Step by Step Solution
- Step 1: Write the proportion equation
3,969,912,951.95 : 5,955,757,524.88 = 1,209,757,988.75 : x - Step 2: Convert to fraction form
3,969,912,951.95/5,955,757,524.88 = 1,209,757,988.75/x - Step 3: Cross multiply
3,969,912,951.95x = 5,955,757,524.88 × 1,209,757,988.75 - Step 4: Simplify right side
3,969,912,951.95x = 7,205,025,244,748,702,720 - Step 5: Solve for x
x = 7,205,025,244,748,702,720/3,969,912,951.95 - Step 6: Final answer
x = 1,814,907,614.34
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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.