Finding the Fourth Proportional to 870,451.29, 1,201,276.08 and 488,478.07
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Solution
The fourth proportional to 870,451.29, 1,201,276.08 and 488,478.07 is: 674,129.65
Step by Step Solution
- Step 1: Write the proportion equation
870,451.29 : 1,201,276.08 = 488,478.07 : x - Step 2: Convert to fraction form
870,451.29/1,201,276.08 = 488,478.07/x - Step 3: Cross multiply
870,451.29x = 1,201,276.08 × 488,478.07 - Step 4: Simplify right side
870,451.29x = 586,797,021,095.57 - Step 5: Solve for x
x = 586,797,021,095.57/870,451.29 - Step 6: Final answer
x = 674,129.65
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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.