Finding the Fourth Proportional to 861,517.08, 1,291,477.23 and 381,489.21
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Solution
The fourth proportional to 861,517.08, 1,291,477.23 and 381,489.21 is: 571,880.28
Step by Step Solution
- Step 1: Write the proportion equation
861,517.08 : 1,291,477.23 = 381,489.21 : x - Step 2: Convert to fraction form
861,517.08/1,291,477.23 = 381,489.21/x - Step 3: Cross multiply
861,517.08x = 1,291,477.23 × 381,489.21 - Step 4: Simplify right side
861,517.08x = 492,684,628,205.69 - Step 5: Solve for x
x = 492,684,628,205.69/861,517.08 - Step 6: Final answer
x = 571,880.28
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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.