Finding the Fourth Proportional to 719,449.54, 992,769.60 and 397,138.84
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Solution
The fourth proportional to 719,449.54, 992,769.60 and 397,138.84 is: 548,012.54
Step by Step Solution
- Step 1: Write the proportion equation
719,449.54 : 992,769.60 = 397,138.84 : x - Step 2: Convert to fraction form
719,449.54/992,769.60 = 397,138.84/x - Step 3: Cross multiply
719,449.54x = 992,769.60 × 397,138.84 - Step 4: Simplify right side
719,449.54x = 394,267,367,331.26 - Step 5: Solve for x
x = 394,267,367,331.26/719,449.54 - Step 6: Final answer
x = 548,012.54
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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.