Finding the Fourth Proportional to 460,913.80, 691,370.70 and 128,489.80
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Solution
The fourth proportional to 460,913.80, 691,370.70 and 128,489.80 is: 192,734.70
Step by Step Solution
- Step 1: Write the proportion equation
460,913.80 : 691,370.70 = 128,489.80 : x - Step 2: Convert to fraction form
460,913.80/691,370.70 = 128,489.80/x - Step 3: Cross multiply
460,913.80x = 691,370.70 × 128,489.80 - Step 4: Simplify right side
460,913.80x = 88,834,082,968.86 - Step 5: Solve for x
x = 88,834,082,968.86/460,913.80 - Step 6: Final answer
x = 192,734.70
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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.