Finding the Fourth Proportional to 1,278,775.44, 1,918,469.69 and 425,854.48
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Solution
The fourth proportional to 1,278,775.44, 1,918,469.69 and 425,854.48 is: 638,883.79
Step by Step Solution
- Step 1: Write the proportion equation
1,278,775.44 : 1,918,469.69 = 425,854.48 : x - Step 2: Convert to fraction form
1,278,775.44/1,918,469.69 = 425,854.48/x - Step 3: Cross multiply
1,278,775.44x = 1,918,469.69 × 425,854.48 - Step 4: Simplify right side
1,278,775.44x = 816,988,904,801.24 - Step 5: Solve for x
x = 816,988,904,801.24/1,278,775.44 - Step 6: Final answer
x = 638,883.79
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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.