Finding the Fourth Proportional to 392,069.18, 541,790.97 and 320,423.06
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Solution
The fourth proportional to 392,069.18, 541,790.97 and 320,423.06 is: 442,784.92
Step by Step Solution
- Step 1: Write the proportion equation
392,069.18 : 541,790.97 = 320,423.06 : x - Step 2: Convert to fraction form
392,069.18/541,790.97 = 320,423.06/x - Step 3: Cross multiply
392,069.18x = 541,790.97 × 320,423.06 - Step 4: Simplify right side
392,069.18x = 173,602,320,487.77 - Step 5: Solve for x
x = 173,602,320,487.77/392,069.18 - Step 6: Final answer
x = 442,784.92
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.