Finding the Fourth Proportional to 664,495.80, 996,743.70 and 398,119.20
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Solution
The fourth proportional to 664,495.80, 996,743.70 and 398,119.20 is: 597,178.80
Step by Step Solution
- Step 1: Write the proportion equation
664,495.80 : 996,743.70 = 398,119.20 : x - Step 2: Convert to fraction form
664,495.80/996,743.70 = 398,119.20/x - Step 3: Cross multiply
664,495.80x = 996,743.70 × 398,119.20 - Step 4: Simplify right side
664,495.80x = 396,822,804,449.04 - Step 5: Solve for x
x = 396,822,804,449.04/664,495.80 - Step 6: Final answer
x = 597,178.80
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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.