Finding the Fourth Proportional to 2,115,435.22, 2,921,704.20 and 1,425,917.86
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Solution
The fourth proportional to 2,115,435.22, 2,921,704.20 and 1,425,917.86 is: 1,969,386.80
Step by Step Solution
- Step 1: Write the proportion equation
2,115,435.22 : 2,921,704.20 = 1,425,917.86 : x - Step 2: Convert to fraction form
2,115,435.22/2,921,704.20 = 1,425,917.86/x - Step 3: Cross multiply
2,115,435.22x = 2,921,704.20 × 1,425,917.86 - Step 4: Simplify right side
2,115,435.22x = 4,166,110,200,417.01 - Step 5: Solve for x
x = 4,166,110,200,417.01/2,115,435.22 - Step 6: Final answer
x = 1,969,386.80
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.