Finding the Fourth Proportional to 451,342.74, 672,978.99 and 438,942.45
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Solution
The fourth proportional to 451,342.74, 672,978.99 and 438,942.45 is: 654,489.42
Step by Step Solution
- Step 1: Write the proportion equation
451,342.74 : 672,978.99 = 438,942.45 : x - Step 2: Convert to fraction form
451,342.74/672,978.99 = 438,942.45/x - Step 3: Cross multiply
451,342.74x = 672,978.99 × 438,942.45 - Step 4: Simplify right side
451,342.74x = 295,399,046,669.13 - Step 5: Solve for x
x = 295,399,046,669.13/451,342.74 - Step 6: Final answer
x = 654,489.42
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.