Finding the Fourth Proportional to 5,615,819.85, 7,693,636.39 and 5,405,821.08
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Solution
The fourth proportional to 5,615,819.85, 7,693,636.39 and 5,405,821.08 is: 7,405,939.45
Step by Step Solution
- Step 1: Write the proportion equation
5,615,819.85 : 7,693,636.39 = 5,405,821.08 : x - Step 2: Convert to fraction form
5,615,819.85/7,693,636.39 = 5,405,821.08/x - Step 3: Cross multiply
5,615,819.85x = 7,693,636.39 × 5,405,821.08 - Step 4: Simplify right side
5,615,819.85x = 41,590,421,778,917.10 - Step 5: Solve for x
x = 41,590,421,778,917.10/5,615,819.85 - Step 6: Final answer
x = 7,405,939.45
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.