Finding the Fourth Proportional to 7,278,352, 10,040,879.28 and 4,220,795.68
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Solution
The fourth proportional to 7,278,352, 10,040,879.28 and 4,220,795.68 is: 5,822,815.37
Step by Step Solution
- Step 1: Write the proportion equation
7,278,352 : 10,040,879.28 = 4,220,795.68 : x - Step 2: Convert to fraction form
7,278,352/10,040,879.28 = 4,220,795.68/x - Step 3: Cross multiply
7,278,352x = 10,040,879.28 × 4,220,795.68 - Step 4: Simplify right side
7,278,352x = 42,380,499,888,425.51 - Step 5: Solve for x
x = 42,380,499,888,425.51/7,278,352 - Step 6: Final answer
x = 5,822,815.37
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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.