Finding the Fourth Proportional to 631,147.28, 870,865.97 and 359,198.99
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Solution
The fourth proportional to 631,147.28, 870,865.97 and 359,198.99 is: 495,627.86
Step by Step Solution
- Step 1: Write the proportion equation
631,147.28 : 870,865.97 = 359,198.99 : x - Step 2: Convert to fraction form
631,147.28/870,865.97 = 359,198.99/x - Step 3: Cross multiply
631,147.28x = 870,865.97 × 359,198.99 - Step 4: Simplify right side
631,147.28x = 312,814,173,964.79 - Step 5: Solve for x
x = 312,814,173,964.79/631,147.28 - Step 6: Final answer
x = 495,627.86
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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.