Finding the Fourth Proportional to 7,965,492.80, 11,948,239.20 and 2,646,708.80
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Solution
The fourth proportional to 7,965,492.80, 11,948,239.20 and 2,646,708.80 is: 3,970,063.20
Step by Step Solution
- Step 1: Write the proportion equation
7,965,492.80 : 11,948,239.20 = 2,646,708.80 : x - Step 2: Convert to fraction form
7,965,492.80/11,948,239.20 = 2,646,708.80/x - Step 3: Cross multiply
7,965,492.80x = 11,948,239.20 × 2,646,708.80 - Step 4: Simplify right side
7,965,492.80x = 31,623,509,835,144.96 - Step 5: Solve for x
x = 31,623,509,835,144.96/7,965,492.80 - Step 6: Final answer
x = 3,970,063.20
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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.