Finding the Fourth Proportional to 718,297.98, 991,206.38 and 396,008.09
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Solution
The fourth proportional to 718,297.98, 991,206.38 and 396,008.09 is: 546,466.44
Step by Step Solution
- Step 1: Write the proportion equation
718,297.98 : 991,206.38 = 396,008.09 : x - Step 2: Convert to fraction form
718,297.98/991,206.38 = 396,008.09/x - Step 3: Cross multiply
718,297.98x = 991,206.38 × 396,008.09 - Step 4: Simplify right side
718,297.98x = 392,525,738,403.54 - Step 5: Solve for x
x = 392,525,738,403.54/718,297.98 - Step 6: Final answer
x = 546,466.44
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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.