Finding the Fourth Proportional to 720,221.58, 993,878.94 and 397,924.78
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Solution
The fourth proportional to 720,221.58, 993,878.94 and 397,924.78 is: 549,121.37
Step by Step Solution
- Step 1: Write the proportion equation
720,221.58 : 993,878.94 = 397,924.78 : x - Step 2: Convert to fraction form
720,221.58/993,878.94 = 397,924.78/x - Step 3: Cross multiply
720,221.58x = 993,878.94 × 397,924.78 - Step 4: Simplify right side
720,221.58x = 395,489,058,546.13 - Step 5: Solve for x
x = 395,489,058,546.13/720,221.58 - Step 6: Final answer
x = 549,121.37
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1.5x scale
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.