Finding the Fourth Proportional to 719,067.36, 992,311.79 and 396,777.20
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Solution
The fourth proportional to 719,067.36, 992,311.79 and 396,777.20 is: 547,551.89
Step by Step Solution
- Step 1: Write the proportion equation
719,067.36 : 992,311.79 = 396,777.20 : x - Step 2: Convert to fraction form
719,067.36/992,311.79 = 396,777.20/x - Step 3: Cross multiply
719,067.36x = 992,311.79 × 396,777.20 - Step 4: Simplify right side
719,067.36x = 393,726,693,563.19 - Step 5: Solve for x
x = 393,726,693,563.19/719,067.36 - Step 6: Final answer
x = 547,551.89
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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.