Finding the Fourth Proportional to 7,872,989.10, 11,809,478.79 and 6,078,492.42
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Solution
The fourth proportional to 7,872,989.10, 11,809,478.79 and 6,078,492.42 is: 9,117,734.88
Step by Step Solution
- Step 1: Write the proportion equation
7,872,989.10 : 11,809,478.79 = 6,078,492.42 : x - Step 2: Convert to fraction form
7,872,989.10/11,809,478.79 = 6,078,492.42/x - Step 3: Cross multiply
7,872,989.10x = 11,809,478.79 × 6,078,492.42 - Step 4: Simplify right side
7,872,989.10x = 71,783,827,309,165.77 - Step 5: Solve for x
x = 71,783,827,309,165.77/7,872,989.10 - Step 6: Final answer
x = 9,117,734.88
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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.