Finding the Fourth Proportional to 946,736.19, 1,420,116.84 and 315,650.21
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Solution
The fourth proportional to 946,736.19, 1,420,116.84 and 315,650.21 is: 473,479.49
Step by Step Solution
- Step 1: Write the proportion equation
946,736.19 : 1,420,116.84 = 315,650.21 : x - Step 2: Convert to fraction form
946,736.19/1,420,116.84 = 315,650.21/x - Step 3: Cross multiply
946,736.19x = 1,420,116.84 × 315,650.21 - Step 4: Simplify right side
946,736.19x = 448,260,171,669.95 - Step 5: Solve for x
x = 448,260,171,669.95/946,736.19 - Step 6: Final answer
x = 473,479.49
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1.5x scale
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.