Finding the Fourth Proportional to 2,128,604.40, 3,195,239.40 and 1,330,786.80
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Solution
The fourth proportional to 2,128,604.40, 3,195,239.40 and 1,330,786.80 is: 1,997,638.65
Step by Step Solution
- Step 1: Write the proportion equation
2,128,604.40 : 3,195,239.40 = 1,330,786.80 : x - Step 2: Convert to fraction form
2,128,604.40/3,195,239.40 = 1,330,786.80/x - Step 3: Cross multiply
2,128,604.40x = 3,195,239.40 × 1,330,786.80 - Step 4: Simplify right side
2,128,604.40x = 4,252,182,416,359.92 - Step 5: Solve for x
x = 4,252,182,416,359.92/2,128,604.40 - Step 6: Final answer
x = 1,997,638.65
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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.