Finding the Fourth Proportional to 1,405,910.40, 2,107,310.40 and 775,276.80
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Solution
The fourth proportional to 1,405,910.40, 2,107,310.40 and 775,276.80 is: 1,162,057.60
Step by Step Solution
- Step 1: Write the proportion equation
1,405,910.40 : 2,107,310.40 = 775,276.80 : x - Step 2: Convert to fraction form
1,405,910.40/2,107,310.40 = 775,276.80/x - Step 3: Cross multiply
1,405,910.40x = 2,107,310.40 × 775,276.80 - Step 4: Simplify right side
1,405,910.40x = 1,633,748,863,518.72 - Step 5: Solve for x
x = 1,633,748,863,518.72/1,405,910.40 - Step 6: Final answer
x = 1,162,057.60
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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.