Finding the Fourth Proportional to 7,190,403.12, 9,916,184.64 and 5,620,742.16
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Solution
The fourth proportional to 7,190,403.12, 9,916,184.64 and 5,620,742.16 is: 7,751,487.11
Step by Step Solution
- Step 1: Write the proportion equation
7,190,403.12 : 9,916,184.64 = 5,620,742.16 : x - Step 2: Convert to fraction form
7,190,403.12/9,916,184.64 = 5,620,742.16/x - Step 3: Cross multiply
7,190,403.12x = 9,916,184.64 × 5,620,742.16 - Step 4: Simplify right side
7,190,403.12x = 55,736,317,072,392.43 - Step 5: Solve for x
x = 55,736,317,072,392.43/7,190,403.12 - Step 6: Final answer
x = 7,751,487.11
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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.