Finding the Fourth Proportional to 2,128,053.70, 3,192,080.55 and 1,330,236.10
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Solution
The fourth proportional to 2,128,053.70, 3,192,080.55 and 1,330,236.10 is: 1,995,354.15
Step by Step Solution
- Step 1: Write the proportion equation
2,128,053.70 : 3,192,080.55 = 1,330,236.10 : x - Step 2: Convert to fraction form
2,128,053.70/3,192,080.55 = 1,330,236.10/x - Step 3: Cross multiply
2,128,053.70x = 3,192,080.55 × 1,330,236.10 - Step 4: Simplify right side
2,128,053.70x = 4,246,220,781,717.86 - Step 5: Solve for x
x = 4,246,220,781,717.86/2,128,053.70 - Step 6: Final answer
x = 1,995,354.15
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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.