Finding the Fourth Proportional to 392,686.20, 589,029.30 and 366,247.80
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Solution
The fourth proportional to 392,686.20, 589,029.30 and 366,247.80 is: 549,371.70
Step by Step Solution
- Step 1: Write the proportion equation
392,686.20 : 589,029.30 = 366,247.80 : x - Step 2: Convert to fraction form
392,686.20/589,029.30 = 366,247.80/x - Step 3: Cross multiply
392,686.20x = 589,029.30 × 366,247.80 - Step 4: Simplify right side
392,686.20x = 215,730,685,260.54 - Step 5: Solve for x
x = 215,730,685,260.54/392,686.20 - Step 6: Final answer
x = 549,371.70
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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.