Finding the Fourth Proportional to 7,012,989.63, 9,677,519.06 and 3,915,709.09
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Solution
The fourth proportional to 7,012,989.63, 9,677,519.06 and 3,915,709.09 is: 5,403,451.50
Step by Step Solution
- Step 1: Write the proportion equation
7,012,989.63 : 9,677,519.06 = 3,915,709.09 : x - Step 2: Convert to fraction form
7,012,989.63/9,677,519.06 = 3,915,709.09/x - Step 3: Cross multiply
7,012,989.63x = 9,677,519.06 × 3,915,709.09 - Step 4: Simplify right side
7,012,989.63x = 37,894,349,338,403.18 - Step 5: Solve for x
x = 37,894,349,338,403.18/7,012,989.63 - Step 6: Final answer
x = 5,403,451.50
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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.