Finding the Fourth Proportional to 2,138,446.05, 2,951,059.28 and 1,171,555.53
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Solution
The fourth proportional to 2,138,446.05, 2,951,059.28 and 1,171,555.53 is: 1,616,748.67
Step by Step Solution
- Step 1: Write the proportion equation
2,138,446.05 : 2,951,059.28 = 1,171,555.53 : x - Step 2: Convert to fraction form
2,138,446.05/2,951,059.28 = 1,171,555.53/x - Step 3: Cross multiply
2,138,446.05x = 2,951,059.28 × 1,171,555.53 - Step 4: Simplify right side
2,138,446.05x = 3,457,329,812,984.04 - Step 5: Solve for x
x = 3,457,329,812,984.04/2,138,446.05 - Step 6: Final answer
x = 1,616,748.67
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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.