Finding the Fourth Proportional to 1,311,135.64, 1,966,700.72 and 412,655.90
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Solution
The fourth proportional to 1,311,135.64, 1,966,700.72 and 412,655.90 is: 618,982.99
Step by Step Solution
- Step 1: Write the proportion equation
1,311,135.64 : 1,966,700.72 = 412,655.90 : x - Step 2: Convert to fraction form
1,311,135.64/1,966,700.72 = 412,655.90/x - Step 3: Cross multiply
1,311,135.64x = 1,966,700.72 × 412,655.90 - Step 4: Simplify right side
1,311,135.64x = 811,570,655,642.25 - Step 5: Solve for x
x = 811,570,655,642.25/1,311,135.64 - Step 6: Final answer
x = 618,982.99
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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.