Finding the Fourth Proportional to 870,442.62, 1,201,297.14 and 488,470.92
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Solution
The fourth proportional to 870,442.62, 1,201,297.14 and 488,470.92 is: 674,138.31
Step by Step Solution
- Step 1: Write the proportion equation
870,442.62 : 1,201,297.14 = 488,470.92 : x - Step 2: Convert to fraction form
870,442.62/1,201,297.14 = 488,470.92/x - Step 3: Cross multiply
870,442.62x = 1,201,297.14 × 488,470.92 - Step 4: Simplify right side
870,442.62x = 586,798,719,169.17 - Step 5: Solve for x
x = 586,798,719,169.17/870,442.62 - Step 6: Final answer
x = 674,138.31
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1.5x scale
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.