Finding the Fourth Proportional to 5,102,981.40, 7,042,511.34 and 2,811,554.04
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Solution
The fourth proportional to 5,102,981.40, 7,042,511.34 and 2,811,554.04 is: 3,880,163.31
Step by Step Solution
- Step 1: Write the proportion equation
5,102,981.40 : 7,042,511.34 = 2,811,554.04 : x - Step 2: Convert to fraction form
5,102,981.40/7,042,511.34 = 2,811,554.04/x - Step 3: Cross multiply
5,102,981.40x = 7,042,511.34 × 2,811,554.04 - Step 4: Simplify right side
5,102,981.40x = 19,800,401,209,722.81 - Step 5: Solve for x
x = 19,800,401,209,722.81/5,102,981.40 - Step 6: Final answer
x = 3,880,163.31
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1.5x scale
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.