Finding the Fourth Proportional to 410,831.20, 616,246.80 and 278,120.80
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Solution
The fourth proportional to 410,831.20, 616,246.80 and 278,120.80 is: 417,181.20
Step by Step Solution
- Step 1: Write the proportion equation
410,831.20 : 616,246.80 = 278,120.80 : x - Step 2: Convert to fraction form
410,831.20/616,246.80 = 278,120.80/x - Step 3: Cross multiply
410,831.20x = 616,246.80 × 278,120.80 - Step 4: Simplify right side
410,831.20x = 171,391,053,013.44 - Step 5: Solve for x
x = 171,391,053,013.44/410,831.20 - Step 6: Final answer
x = 417,181.20
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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.