Finding the Fourth Proportional to 1,811,213.70, 2,716,820.55 and 971,405.70
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Solution
The fourth proportional to 1,811,213.70, 2,716,820.55 and 971,405.70 is: 1,457,108.55
Step by Step Solution
- Step 1: Write the proportion equation
1,811,213.70 : 2,716,820.55 = 971,405.70 : x - Step 2: Convert to fraction form
1,811,213.70/2,716,820.55 = 971,405.70/x - Step 3: Cross multiply
1,811,213.70x = 2,716,820.55 × 971,405.70 - Step 4: Simplify right side
1,811,213.70x = 2,639,134,968,147.13 - Step 5: Solve for x
x = 2,639,134,968,147.13/1,811,213.70 - Step 6: Final answer
x = 1,457,108.55
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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.