Finding the Fourth Proportional to 718,227.99, 991,148.12 and 395,938.09
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Solution
The fourth proportional to 718,227.99, 991,148.12 and 395,938.09 is: 546,390.98
Step by Step Solution
- Step 1: Write the proportion equation
718,227.99 : 991,148.12 = 395,938.09 : x - Step 2: Convert to fraction form
718,227.99/991,148.12 = 395,938.09/x - Step 3: Cross multiply
718,227.99x = 991,148.12 × 395,938.09 - Step 4: Simplify right side
718,227.99x = 392,433,293,539.89 - Step 5: Solve for x
x = 392,433,293,539.89/718,227.99 - Step 6: Final answer
x = 546,390.98
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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.