Finding the Fourth Proportional to 2,112,997.28, 2,915,919 and 1,146,125.12
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Solution
The fourth proportional to 2,112,997.28, 2,915,919 and 1,146,125.12 is: 1,581,643.31
Step by Step Solution
- Step 1: Write the proportion equation
2,112,997.28 : 2,915,919 = 1,146,125.12 : x - Step 2: Convert to fraction form
2,112,997.28/2,915,919 = 1,146,125.12/x - Step 3: Cross multiply
2,112,997.28x = 2,915,919 × 1,146,125.12 - Step 4: Simplify right side
2,112,997.28x = 3,342,008,013,785.28 - Step 5: Solve for x
x = 3,342,008,013,785.28/2,112,997.28 - Step 6: Final answer
x = 1,581,643.31
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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.