Finding the Fourth Proportional to 720,789.66, 994,637.34 and 398,503.62
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Solution
The fourth proportional to 720,789.66, 994,637.34 and 398,503.62 is: 549,906.03
Step by Step Solution
- Step 1: Write the proportion equation
720,789.66 : 994,637.34 = 398,503.62 : x - Step 2: Convert to fraction form
720,789.66/994,637.34 = 398,503.62/x - Step 3: Cross multiply
720,789.66x = 994,637.34 × 398,503.62 - Step 4: Simplify right side
720,789.66x = 396,366,580,577.17 - Step 5: Solve for x
x = 396,366,580,577.17/720,789.66 - Step 6: Final answer
x = 549,906.03
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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.