Finding the Fourth Proportional to 7,141,720.49, 9,855,571.83 and 3,878,536.06
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Solution
The fourth proportional to 7,141,720.49, 9,855,571.83 and 3,878,536.06 is: 5,352,378.43
Step by Step Solution
- Step 1: Write the proportion equation
7,141,720.49 : 9,855,571.83 = 3,878,536.06 : x - Step 2: Convert to fraction form
7,141,720.49/9,855,571.83 = 3,878,536.06/x - Step 3: Cross multiply
7,141,720.49x = 9,855,571.83 × 3,878,536.06 - Step 4: Simplify right side
7,141,720.49x = 38,225,190,732,350.14 - Step 5: Solve for x
x = 38,225,190,732,350.14/7,141,720.49 - Step 6: Final answer
x = 5,352,378.43
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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.