Finding the Fourth Proportional to 6,413,478.53, 9,620,217.79 and 1,621,167.80
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Solution
The fourth proportional to 6,413,478.53, 9,620,217.79 and 1,621,167.80 is: 2,431,751.70
Step by Step Solution
- Step 1: Write the proportion equation
6,413,478.53 : 9,620,217.79 = 1,621,167.80 : x - Step 2: Convert to fraction form
6,413,478.53/9,620,217.79 = 1,621,167.80/x - Step 3: Cross multiply
6,413,478.53x = 9,620,217.79 × 1,621,167.80 - Step 4: Simplify right side
6,413,478.53x = 15,595,987,300,351.22 - Step 5: Solve for x
x = 15,595,987,300,351.22/6,413,478.53 - Step 6: Final answer
x = 2,431,751.70
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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.