Finding the Fourth Proportional to 720,161.42, 993,833.18 and 397,878.95
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Solution
The fourth proportional to 720,161.42, 993,833.18 and 397,878.95 is: 549,078.71
Step by Step Solution
- Step 1: Write the proportion equation
720,161.42 : 993,833.18 = 397,878.95 : x - Step 2: Convert to fraction form
720,161.42/993,833.18 = 397,878.95/x - Step 3: Cross multiply
720,161.42x = 993,833.18 × 397,878.95 - Step 4: Simplify right side
720,161.42x = 395,425,302,133.56 - Step 5: Solve for x
x = 395,425,302,133.56/720,161.42 - Step 6: Final answer
x = 549,078.71
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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.