Finding the Fourth Proportional to 2,976,930,540.81, 4,465,519,045.29 and 878,406,907.05
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Solution
The fourth proportional to 2,976,930,540.81, 4,465,519,045.29 and 878,406,907.05 is: 1,317,646,723.42
Step by Step Solution
- Step 1: Write the proportion equation
2,976,930,540.81 : 4,465,519,045.29 = 878,406,907.05 : x - Step 2: Convert to fraction form
2,976,930,540.81/4,465,519,045.29 = 878,406,907.05/x - Step 3: Cross multiply
2,976,930,540.81x = 4,465,519,045.29 × 878,406,907.05 - Step 4: Simplify right side
2,976,930,540.81x = 3,922,542,772,946,057,728 - Step 5: Solve for x
x = 3,922,542,772,946,057,728/2,976,930,540.81 - Step 6: Final answer
x = 1,317,646,723.42
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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.