Finding the Fourth Proportional to 1,207,531.28, 1,811,469.12 and 409,041.32
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Solution
The fourth proportional to 1,207,531.28, 1,811,469.12 and 409,041.32 is: 613,620.31
Step by Step Solution
- Step 1: Write the proportion equation
1,207,531.28 : 1,811,469.12 = 409,041.32 : x - Step 2: Convert to fraction form
1,207,531.28/1,811,469.12 = 409,041.32/x - Step 3: Cross multiply
1,207,531.28x = 1,811,469.12 × 409,041.32 - Step 4: Simplify right side
1,207,531.28x = 740,965,719,984.04 - Step 5: Solve for x
x = 740,965,719,984.04/1,207,531.28 - Step 6: Final answer
x = 613,620.31
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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.