Finding the Fourth Proportional to 2,085,984,145.80, 3,129,396,122.70 and 612,121,105.80
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Solution
The fourth proportional to 2,085,984,145.80, 3,129,396,122.70 and 612,121,105.80 is: 918,304,877.33
Step by Step Solution
- Step 1: Write the proportion equation
2,085,984,145.80 : 3,129,396,122.70 = 612,121,105.80 : x - Step 2: Convert to fraction form
2,085,984,145.80/3,129,396,122.70 = 612,121,105.80/x - Step 3: Cross multiply
2,085,984,145.80x = 3,129,396,122.70 × 612,121,105.80 - Step 4: Simplify right side
2,085,984,145.80x = 1,915,569,415,113,356,288 - Step 5: Solve for x
x = 1,915,569,415,113,356,288/2,085,984,145.80 - Step 6: Final answer
x = 918,304,877.33
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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.