Finding the Fourth Proportional to 831,023.45, 1,246,265.30 and 318,661.65
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Solution
The fourth proportional to 831,023.45, 1,246,265.30 and 318,661.65 is: 477,888.99
Step by Step Solution
- Step 1: Write the proportion equation
831,023.45 : 1,246,265.30 = 318,661.65 : x - Step 2: Convert to fraction form
831,023.45/1,246,265.30 = 318,661.65/x - Step 3: Cross multiply
831,023.45x = 1,246,265.30 × 318,661.65 - Step 4: Simplify right side
831,023.45x = 397,136,957,632.40 - Step 5: Solve for x
x = 397,136,957,632.40/831,023.45 - Step 6: Final answer
x = 477,888.99
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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.