Finding the Fourth Proportional to 1,279,820.38, 1,919,737.74 and 426,889.68
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Solution
The fourth proportional to 1,279,820.38, 1,919,737.74 and 426,889.68 is: 640,336.92
Step by Step Solution
- Step 1: Write the proportion equation
1,279,820.38 : 1,919,737.74 = 426,889.68 : x - Step 2: Convert to fraction form
1,279,820.38/1,919,737.74 = 426,889.68/x - Step 3: Cross multiply
1,279,820.38x = 1,919,737.74 × 426,889.68 - Step 4: Simplify right side
1,279,820.38x = 819,516,235,649.32 - Step 5: Solve for x
x = 819,516,235,649.32/1,279,820.38 - Step 6: Final answer
x = 640,336.92
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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.