Finding the Fourth Proportional to 1,269,272.64, 1,903,915.20 and 427,831.68
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Solution
The fourth proportional to 1,269,272.64, 1,903,915.20 and 427,831.68 is: 641,749.62
Step by Step Solution
- Step 1: Write the proportion equation
1,269,272.64 : 1,903,915.20 = 427,831.68 : x - Step 2: Convert to fraction form
1,269,272.64/1,903,915.20 = 427,831.68/x - Step 3: Cross multiply
1,269,272.64x = 1,903,915.20 × 427,831.68 - Step 4: Simplify right side
1,269,272.64x = 814,555,238,593.54 - Step 5: Solve for x
x = 814,555,238,593.54/1,269,272.64 - Step 6: Final answer
x = 641,749.62
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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.