Finding the Fourth Proportional to 685,647.44, 1,028,539.21 and 253,478.18
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Solution
The fourth proportional to 685,647.44, 1,028,539.21 and 253,478.18 is: 380,242.43
Step by Step Solution
- Step 1: Write the proportion equation
685,647.44 : 1,028,539.21 = 253,478.18 : x - Step 2: Convert to fraction form
685,647.44/1,028,539.21 = 253,478.18/x - Step 3: Cross multiply
685,647.44x = 1,028,539.21 × 253,478.18 - Step 4: Simplify right side
685,647.44x = 260,712,247,009.44 - Step 5: Solve for x
x = 260,712,247,009.44/685,647.44 - Step 6: Final answer
x = 380,242.43
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.