Finding the Fourth Proportional to 7,215,580.29, 9,954,729.18 and 4,118,275.56
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Solution
The fourth proportional to 7,215,580.29, 9,954,729.18 and 4,118,275.56 is: 5,681,638.38
Step by Step Solution
- Step 1: Write the proportion equation
7,215,580.29 : 9,954,729.18 = 4,118,275.56 : x - Step 2: Convert to fraction form
7,215,580.29/9,954,729.18 = 4,118,275.56/x - Step 3: Cross multiply
7,215,580.29x = 9,954,729.18 × 4,118,275.56 - Step 4: Simplify right side
7,215,580.29x = 40,996,317,888,412.84 - Step 5: Solve for x
x = 40,996,317,888,412.84/7,215,580.29 - Step 6: Final answer
x = 5,681,638.38
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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.