Finding the Fourth Proportional to 840,400.26, 1,260,611.36 and 279,434.76
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Solution
The fourth proportional to 840,400.26, 1,260,611.36 and 279,434.76 is: 419,155.79
Step by Step Solution
- Step 1: Write the proportion equation
840,400.26 : 1,260,611.36 = 279,434.76 : x - Step 2: Convert to fraction form
840,400.26/1,260,611.36 = 279,434.76/x - Step 3: Cross multiply
840,400.26x = 1,260,611.36 × 279,434.76 - Step 4: Simplify right side
840,400.26x = 352,258,632,834.87 - Step 5: Solve for x
x = 352,258,632,834.87/840,400.26 - Step 6: Final answer
x = 419,155.79
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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.