Finding the Fourth Proportional to 2,128,676.98, 3,193,436.10 and 780,852.10
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Solution
The fourth proportional to 2,128,676.98, 3,193,436.10 and 780,852.10 is: 1,171,432.45
Step by Step Solution
- Step 1: Write the proportion equation
2,128,676.98 : 3,193,436.10 = 780,852.10 : x - Step 2: Convert to fraction form
2,128,676.98/3,193,436.10 = 780,852.10/x - Step 3: Cross multiply
2,128,676.98x = 3,193,436.10 × 780,852.10 - Step 4: Simplify right side
2,128,676.98x = 2,493,601,284,900.81 - Step 5: Solve for x
x = 2,493,601,284,900.81/2,128,676.98 - Step 6: Final answer
x = 1,171,432.45
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1.5x scale
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.