Finding the Fourth Proportional to 1,279,228.26, 1,918,492.11 and 480,448.02
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Solution
The fourth proportional to 1,279,228.26, 1,918,492.11 and 480,448.02 is: 720,540.47
Step by Step Solution
- Step 1: Write the proportion equation
1,279,228.26 : 1,918,492.11 = 480,448.02 : x - Step 2: Convert to fraction form
1,279,228.26/1,918,492.11 = 480,448.02/x - Step 3: Cross multiply
1,279,228.26x = 1,918,492.11 × 480,448.02 - Step 4: Simplify right side
1,279,228.26x = 921,735,735,635.12 - Step 5: Solve for x
x = 921,735,735,635.12/1,279,228.26 - Step 6: Final answer
x = 720,540.47
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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.