Finding the Fourth Proportional to 718,225.99, 991,145.36 and 395,936.09
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Solution
The fourth proportional to 718,225.99, 991,145.36 and 395,936.09 is: 546,388.22
Step by Step Solution
- Step 1: Write the proportion equation
718,225.99 : 991,145.36 = 395,936.09 : x - Step 2: Convert to fraction form
718,225.99/991,145.36 = 395,936.09/x - Step 3: Cross multiply
718,225.99x = 991,145.36 × 395,936.09 - Step 4: Simplify right side
718,225.99x = 392,430,216,817.15 - Step 5: Solve for x
x = 392,430,216,817.15/718,225.99 - Step 6: Final answer
x = 546,388.22
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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.