Finding the Fourth Proportional to 5,378,386.44, 7,421,908.86 and 2,930,990.07
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Solution
The fourth proportional to 5,378,386.44, 7,421,908.86 and 2,930,990.07 is: 4,044,622.20
Step by Step Solution
- Step 1: Write the proportion equation
5,378,386.44 : 7,421,908.86 = 2,930,990.07 : x - Step 2: Convert to fraction form
5,378,386.44/7,421,908.86 = 2,930,990.07/x - Step 3: Cross multiply
5,378,386.44x = 7,421,908.86 × 2,930,990.07 - Step 4: Simplify right side
5,378,386.44x = 21,753,541,169,105.02 - Step 5: Solve for x
x = 21,753,541,169,105.02/5,378,386.44 - Step 6: Final answer
x = 4,044,622.20
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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.