Finding the Fourth Proportional to 4,991,355.91, 6,888,386.16 and 2,815,105.01
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Solution
The fourth proportional to 4,991,355.91, 6,888,386.16 and 2,815,105.01 is: 3,885,022.58
Step by Step Solution
- Step 1: Write the proportion equation
4,991,355.91 : 6,888,386.16 = 2,815,105.01 : x - Step 2: Convert to fraction form
4,991,355.91/6,888,386.16 = 2,815,105.01/x - Step 3: Cross multiply
4,991,355.91x = 6,888,386.16 × 2,815,105.01 - Step 4: Simplify right side
4,991,355.91x = 19,391,530,375,755.14 - Step 5: Solve for x
x = 19,391,530,375,755.14/4,991,355.91 - Step 6: Final answer
x = 3,885,022.58
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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.