Finding the Fourth Proportional to 861,856.19, 1,292,784.28 and 270,880.19
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Solution
The fourth proportional to 861,856.19, 1,292,784.28 and 270,880.19 is: 406,320.28
Step by Step Solution
- Step 1: Write the proportion equation
861,856.19 : 1,292,784.28 = 270,880.19 : x - Step 2: Convert to fraction form
861,856.19/1,292,784.28 = 270,880.19/x - Step 3: Cross multiply
861,856.19x = 1,292,784.28 × 270,880.19 - Step 4: Simplify right side
861,856.19x = 350,189,651,395.41 - Step 5: Solve for x
x = 350,189,651,395.41/861,856.19 - Step 6: Final answer
x = 406,320.28
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1.5x scale
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.