Finding the Fourth Proportional to 651,391.68, 976,989.60 and 381,643.68
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Solution
The fourth proportional to 651,391.68, 976,989.60 and 381,643.68 is: 572,408.15
Step by Step Solution
- Step 1: Write the proportion equation
651,391.68 : 976,989.60 = 381,643.68 : x - Step 2: Convert to fraction form
651,391.68/976,989.60 = 381,643.68/x - Step 3: Cross multiply
651,391.68x = 976,989.60 × 381,643.68 - Step 4: Simplify right side
651,391.68x = 372,861,906,265.73 - Step 5: Solve for x
x = 372,861,906,265.73/651,391.68 - Step 6: Final answer
x = 572,408.15
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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.