Finding the Fourth Proportional to 664,489.80, 996,734.70 and 398,113.20
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Solution
The fourth proportional to 664,489.80, 996,734.70 and 398,113.20 is: 597,169.80
Step by Step Solution
- Step 1: Write the proportion equation
664,489.80 : 996,734.70 = 398,113.20 : x - Step 2: Convert to fraction form
664,489.80/996,734.70 = 398,113.20/x - Step 3: Cross multiply
664,489.80x = 996,734.70 × 398,113.20 - Step 4: Simplify right side
664,489.80x = 396,813,240,968.04 - Step 5: Solve for x
x = 396,813,240,968.04/664,489.80 - Step 6: Final answer
x = 597,169.80
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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.