Finding the Fourth Proportional to 7,420,974.92, 11,132,860.81 and 2,811,341.91
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Solution
The fourth proportional to 7,420,974.92, 11,132,860.81 and 2,811,341.91 is: 4,217,542.64
Step by Step Solution
- Step 1: Write the proportion equation
7,420,974.92 : 11,132,860.81 = 2,811,341.91 : x - Step 2: Convert to fraction form
7,420,974.92/11,132,860.81 = 2,811,341.91/x - Step 3: Cross multiply
7,420,974.92x = 11,132,860.81 × 2,811,341.91 - Step 4: Simplify right side
7,420,974.92x = 31,298,278,124,572.96 - Step 5: Solve for x
x = 31,298,278,124,572.96/7,420,974.92 - Step 6: Final answer
x = 4,217,542.64
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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.