Finding the Fourth Proportional to 5,237,782.50, 7,857,005.85 and 1,643,691.18
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Solution
The fourth proportional to 5,237,782.50, 7,857,005.85 and 1,643,691.18 is: 2,465,640.99
Step by Step Solution
- Step 1: Write the proportion equation
5,237,782.50 : 7,857,005.85 = 1,643,691.18 : x - Step 2: Convert to fraction form
5,237,782.50/7,857,005.85 = 1,643,691.18/x - Step 3: Cross multiply
5,237,782.50x = 7,857,005.85 × 1,643,691.18 - Step 4: Simplify right side
5,237,782.50x = 12,914,491,216,853.40 - Step 5: Solve for x
x = 12,914,491,216,853.40/5,237,782.50 - Step 6: Final answer
x = 2,465,640.99
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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.