Finding the Fourth Proportional to 3,428,301.94, 4,731,538.65 and 2,121,972.99
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Solution
The fourth proportional to 3,428,301.94, 4,731,538.65 and 2,121,972.99 is: 2,928,621.05
Step by Step Solution
- Step 1: Write the proportion equation
3,428,301.94 : 4,731,538.65 = 2,121,972.99 : x - Step 2: Convert to fraction form
3,428,301.94/4,731,538.65 = 2,121,972.99/x - Step 3: Cross multiply
3,428,301.94x = 4,731,538.65 × 2,121,972.99 - Step 4: Simplify right side
3,428,301.94x = 10,040,197,236,227.31 - Step 5: Solve for x
x = 10,040,197,236,227.31/3,428,301.94 - Step 6: Final answer
x = 2,928,621.05
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.