Finding the Fourth Proportional to 5,430,523.71, 8,145,679.05 and 2,191,975.23
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Solution
The fourth proportional to 5,430,523.71, 8,145,679.05 and 2,191,975.23 is: 3,287,919.85
Step by Step Solution
- Step 1: Write the proportion equation
5,430,523.71 : 8,145,679.05 = 2,191,975.23 : x - Step 2: Convert to fraction form
5,430,523.71/8,145,679.05 = 2,191,975.23/x - Step 3: Cross multiply
5,430,523.71x = 8,145,679.05 × 2,191,975.23 - Step 4: Simplify right side
5,430,523.71x = 17,855,126,709,129.93 - Step 5: Solve for x
x = 17,855,126,709,129.93/5,430,523.71 - Step 6: Final answer
x = 3,287,919.85
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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.