Finding the Fourth Proportional to 669,363.87, 923,629.11 and 393,734.21
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Solution
The fourth proportional to 669,363.87, 923,629.11 and 393,734.21 is: 543,298.48
Step by Step Solution
- Step 1: Write the proportion equation
669,363.87 : 923,629.11 = 393,734.21 : x - Step 2: Convert to fraction form
669,363.87/923,629.11 = 393,734.21/x - Step 3: Cross multiply
669,363.87x = 923,629.11 × 393,734.21 - Step 4: Simplify right side
669,363.87x = 363,664,373,340.71 - Step 5: Solve for x
x = 363,664,373,340.71/669,363.87 - Step 6: Final answer
x = 543,298.48
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1.5x scale
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.