Finding the Fourth Proportional to 685,400.85, 1,026,977.67 and 485,361.99
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Solution
The fourth proportional to 685,400.85, 1,026,977.67 and 485,361.99 is: 727,247.31
Step by Step Solution
- Step 1: Write the proportion equation
685,400.85 : 1,026,977.67 = 485,361.99 : x - Step 2: Convert to fraction form
685,400.85/1,026,977.67 = 485,361.99/x - Step 3: Cross multiply
685,400.85x = 1,026,977.67 × 485,361.99 - Step 4: Simplify right side
685,400.85x = 498,455,925,596.76 - Step 5: Solve for x
x = 498,455,925,596.76/685,400.85 - Step 6: Final answer
x = 727,247.31
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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.