Finding the Fourth Proportional to 18,879,120.54, 28,307,290.77 and 7,208,254.08
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Solution
The fourth proportional to 18,879,120.54, 28,307,290.77 and 7,208,254.08 is: 10,808,032.28
Step by Step Solution
- Step 1: Write the proportion equation
18,879,120.54 : 28,307,290.77 = 7,208,254.08 : x - Step 2: Convert to fraction form
18,879,120.54/28,307,290.77 = 7,208,254.08/x - Step 3: Cross multiply
18,879,120.54x = 28,307,290.77 × 7,208,254.08 - Step 4: Simplify right side
18,879,120.54x = 204,046,144,186,598.84 - Step 5: Solve for x
x = 204,046,144,186,598.84/18,879,120.54 - Step 6: Final answer
x = 10,808,032.28
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.