Finding the Fourth Proportional to 478,831.20, 718,246.80 and 279,376.80
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Solution
The fourth proportional to 478,831.20, 718,246.80 and 279,376.80 is: 419,065.20
Step by Step Solution
- Step 1: Write the proportion equation
478,831.20 : 718,246.80 = 279,376.80 : x - Step 2: Convert to fraction form
478,831.20/718,246.80 = 279,376.80/x - Step 3: Cross multiply
478,831.20x = 718,246.80 × 279,376.80 - Step 4: Simplify right side
478,831.20x = 200,661,492,594.24 - Step 5: Solve for x
x = 200,661,492,594.24/478,831.20 - Step 6: Final answer
x = 419,065.20
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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.