Finding the Fourth Proportional to 7,991,138.18, 11,982,980.58 and 4,151,928.47
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Solution
The fourth proportional to 7,991,138.18, 11,982,980.58 and 4,151,928.47 is: 6,225,956.44
Step by Step Solution
- Step 1: Write the proportion equation
7,991,138.18 : 11,982,980.58 = 4,151,928.47 : x - Step 2: Convert to fraction form
7,991,138.18/11,982,980.58 = 4,151,928.47/x - Step 3: Cross multiply
7,991,138.18x = 11,982,980.58 × 4,151,928.47 - Step 4: Simplify right side
7,991,138.18x = 49,752,478,165,644.21 - Step 5: Solve for x
x = 49,752,478,165,644.21/7,991,138.18 - Step 6: Final answer
x = 6,225,956.44
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.