Finding the Fourth Proportional to 5,128,759.84, 7,077,247.68 and 2,836,349.92
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Solution
The fourth proportional to 5,128,759.84, 7,077,247.68 and 2,836,349.92 is: 3,913,919.06
Step by Step Solution
- Step 1: Write the proportion equation
5,128,759.84 : 7,077,247.68 = 2,836,349.92 : x - Step 2: Convert to fraction form
5,128,759.84/7,077,247.68 = 2,836,349.92/x - Step 3: Cross multiply
5,128,759.84x = 7,077,247.68 × 2,836,349.92 - Step 4: Simplify right side
5,128,759.84x = 20,073,550,890,988.18 - Step 5: Solve for x
x = 20,073,550,890,988.18/5,128,759.84 - Step 6: Final answer
x = 3,913,919.06
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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.