Finding the Fourth Proportional to 764,539.48, 1,055,091.54 and 420,401.53
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Solution
The fourth proportional to 764,539.48, 1,055,091.54 and 420,401.53 is: 580,168.99
Step by Step Solution
- Step 1: Write the proportion equation
764,539.48 : 1,055,091.54 = 420,401.53 : x - Step 2: Convert to fraction form
764,539.48/1,055,091.54 = 420,401.53/x - Step 3: Cross multiply
764,539.48x = 1,055,091.54 × 420,401.53 - Step 4: Simplify right side
764,539.48x = 443,562,097,706.06 - Step 5: Solve for x
x = 443,562,097,706.06/764,539.48 - Step 6: Final answer
x = 580,168.99
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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.