Finding the Fourth Proportional to 820,378.62, 1,132,120.38 and 457,798.68
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Solution
The fourth proportional to 820,378.62, 1,132,120.38 and 457,798.68 is: 631,761.00
Step by Step Solution
- Step 1: Write the proportion equation
820,378.62 : 1,132,120.38 = 457,798.68 : x - Step 2: Convert to fraction form
820,378.62/1,132,120.38 = 457,798.68/x - Step 3: Cross multiply
820,378.62x = 1,132,120.38 × 457,798.68 - Step 4: Simplify right side
820,378.62x = 518,283,215,565.10 - Step 5: Solve for x
x = 518,283,215,565.10/820,378.62 - Step 6: Final answer
x = 631,761.00
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.