Finding the Fourth Proportional to 386,543.80, 579,815.70 and 268,445.80
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Solution
The fourth proportional to 386,543.80, 579,815.70 and 268,445.80 is: 402,668.70
Step by Step Solution
- Step 1: Write the proportion equation
386,543.80 : 579,815.70 = 268,445.80 : x - Step 2: Convert to fraction form
386,543.80/579,815.70 = 268,445.80/x - Step 3: Cross multiply
386,543.80x = 579,815.70 × 268,445.80 - Step 4: Simplify right side
386,543.80x = 155,649,089,439.06 - Step 5: Solve for x
x = 155,649,089,439.06/386,543.80 - Step 6: Final answer
x = 402,668.70
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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.