Finding the Fourth Proportional to 5,431,829.60, 8,153,965.20 and 3,189,231.20
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Solution
The fourth proportional to 5,431,829.60, 8,153,965.20 and 3,189,231.20 is: 4,787,499.27
Step by Step Solution
- Step 1: Write the proportion equation
5,431,829.60 : 8,153,965.20 = 3,189,231.20 : x - Step 2: Convert to fraction form
5,431,829.60/8,153,965.20 = 3,189,231.20/x - Step 3: Cross multiply
5,431,829.60x = 8,153,965.20 × 3,189,231.20 - Step 4: Simplify right side
5,431,829.60x = 26,004,880,219,554.24 - Step 5: Solve for x
x = 26,004,880,219,554.24/5,431,829.60 - Step 6: Final answer
x = 4,787,499.27
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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.