Finding the Fourth Proportional to 2,128,115.70, 3,192,562.35 and 866,070.90
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Solution
The fourth proportional to 2,128,115.70, 3,192,562.35 and 866,070.90 is: 1,299,264.58
Step by Step Solution
- Step 1: Write the proportion equation
2,128,115.70 : 3,192,562.35 = 866,070.90 : x - Step 2: Convert to fraction form
2,128,115.70/3,192,562.35 = 866,070.90/x - Step 3: Cross multiply
2,128,115.70x = 3,192,562.35 × 866,070.90 - Step 4: Simplify right side
2,128,115.70x = 2,764,985,347,770.62 - Step 5: Solve for x
x = 2,764,985,347,770.62/2,128,115.70 - Step 6: Final answer
x = 1,299,264.58
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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.