Finding the Fourth Proportional to 386,995,431.68, 543,324,154.43 and 386,995,431.68
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Solution
The fourth proportional to 386,995,431.68, 543,324,154.43 and 386,995,431.68 is: 543,324,154.43
Step by Step Solution
- Step 1: Write the proportion equation
386,995,431.68 : 543,324,154.43 = 386,995,431.68 : x - Step 2: Convert to fraction form
386,995,431.68/543,324,154.43 = 386,995,431.68/x - Step 3: Cross multiply
386,995,431.68x = 543,324,154.43 × 386,995,431.68 - Step 4: Simplify right side
386,995,431.68x = 210,263,965,681,157,216 - Step 5: Solve for x
x = 210,263,965,681,157,216/386,995,431.68 - Step 6: Final answer
x = 543,324,154.43
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These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.