Finding the Fourth Proportional to 3,428,303.13, 4,731,540.29 and 2,121,974.18
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Solution
The fourth proportional to 3,428,303.13, 4,731,540.29 and 2,121,974.18 is: 2,928,622.69
Step by Step Solution
- Step 1: Write the proportion equation
3,428,303.13 : 4,731,540.29 = 2,121,974.18 : x - Step 2: Convert to fraction form
3,428,303.13/4,731,540.29 = 2,121,974.18/x - Step 3: Cross multiply
3,428,303.13x = 4,731,540.29 × 2,121,974.18 - Step 4: Simplify right side
3,428,303.13x = 10,040,206,327,009.71 - Step 5: Solve for x
x = 10,040,206,327,009.71/3,428,303.13 - Step 6: Final answer
x = 2,928,622.69
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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.