Finding the Fourth Proportional to 878,853.40, 1,212,806.77 and 516,310.31
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Solution
The fourth proportional to 878,853.40, 1,212,806.77 and 516,310.31 is: 712,501.80
Step by Step Solution
- Step 1: Write the proportion equation
878,853.40 : 1,212,806.77 = 516,310.31 : x - Step 2: Convert to fraction form
878,853.40/1,212,806.77 = 516,310.31/x - Step 3: Cross multiply
878,853.40x = 1,212,806.77 × 516,310.31 - Step 4: Simplify right side
878,853.40x = 626,184,632,033.99 - Step 5: Solve for x
x = 626,184,632,033.99/878,853.40 - Step 6: Final answer
x = 712,501.80
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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.