Finding the Fourth Proportional to 6,424,769.70, 9,618,219.90 and 5,627,608.20
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Solution
The fourth proportional to 6,424,769.70, 9,618,219.90 and 5,627,608.20 is: 8,424,826.99
Step by Step Solution
- Step 1: Write the proportion equation
6,424,769.70 : 9,618,219.90 = 5,627,608.20 : x - Step 2: Convert to fraction form
6,424,769.70/9,618,219.90 = 5,627,608.20/x - Step 3: Cross multiply
6,424,769.70x = 9,618,219.90 × 5,627,608.20 - Step 4: Simplify right side
6,424,769.70x = 54,127,573,178,643.19 - Step 5: Solve for x
x = 54,127,573,178,643.19/6,424,769.70 - Step 6: Final answer
x = 8,424,826.99
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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.