Finding the Fourth Proportional to 656,593.36, 905,944.56 and 398,464.48
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Solution
The fourth proportional to 656,593.36, 905,944.56 and 398,464.48 is: 549,787.36
Step by Step Solution
- Step 1: Write the proportion equation
656,593.36 : 905,944.56 = 398,464.48 : x - Step 2: Convert to fraction form
656,593.36/905,944.56 = 398,464.48/x - Step 3: Cross multiply
656,593.36x = 905,944.56 × 398,464.48 - Step 4: Simplify right side
656,593.36x = 360,986,728,009.23 - Step 5: Solve for x
x = 360,986,728,009.23/656,593.36 - Step 6: Final answer
x = 549,787.36
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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.