Finding the Fourth Proportional to 7,121,828.40, 10,682,755.98 and 1,730,483.40
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Solution
The fourth proportional to 7,121,828.40, 10,682,755.98 and 1,730,483.40 is: 2,595,728.35
Step by Step Solution
- Step 1: Write the proportion equation
7,121,828.40 : 10,682,755.98 = 1,730,483.40 : x - Step 2: Convert to fraction form
7,121,828.40/10,682,755.98 = 1,730,483.40/x - Step 3: Cross multiply
7,121,828.40x = 10,682,755.98 × 1,730,483.40 - Step 4: Simplify right side
7,121,828.40x = 18,486,331,889,640.73 - Step 5: Solve for x
x = 18,486,331,889,640.73/7,121,828.40 - Step 6: Final answer
x = 2,595,728.35
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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.