Finding the Fourth Proportional to 2,147,655.36, 2,960,660.16 and 1,421,286.24
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Solution
The fourth proportional to 2,147,655.36, 2,960,660.16 and 1,421,286.24 is: 1,959,320.67
Step by Step Solution
- Step 1: Write the proportion equation
2,147,655.36 : 2,960,660.16 = 1,421,286.24 : x - Step 2: Convert to fraction form
2,147,655.36/2,960,660.16 = 1,421,286.24/x - Step 3: Cross multiply
2,147,655.36x = 2,960,660.16 × 1,421,286.24 - Step 4: Simplify right side
2,147,655.36x = 4,207,945,546,724.20 - Step 5: Solve for x
x = 4,207,945,546,724.20/2,147,655.36 - Step 6: Final answer
x = 1,959,320.67
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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.