Finding the Fourth Proportional to 642,531.12, 886,698.22 and 356,055.99
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Solution
The fourth proportional to 642,531.12, 886,698.22 and 356,055.99 is: 491,360.19
Step by Step Solution
- Step 1: Write the proportion equation
642,531.12 : 886,698.22 = 356,055.99 : x - Step 2: Convert to fraction form
642,531.12/886,698.22 = 356,055.99/x - Step 3: Cross multiply
642,531.12x = 886,698.22 × 356,055.99 - Step 4: Simplify right side
642,531.12x = 315,714,208,119.85 - Step 5: Solve for x
x = 315,714,208,119.85/642,531.12 - Step 6: Final answer
x = 491,360.19
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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.