Finding the Fourth Proportional to 460,830.20, 691,361.94 and 128,406.20
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Solution
The fourth proportional to 460,830.20, 691,361.94 and 128,406.20 is: 192,641.80
Step by Step Solution
- Step 1: Write the proportion equation
460,830.20 : 691,361.94 = 128,406.20 : x - Step 2: Convert to fraction form
460,830.20/691,361.94 = 128,406.20/x - Step 3: Cross multiply
460,830.20x = 691,361.94 × 128,406.20 - Step 4: Simplify right side
460,830.20x = 88,775,156,083.22 - Step 5: Solve for x
x = 88,775,156,083.22/460,830.20 - Step 6: Final answer
x = 192,641.80
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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.