Finding the Fourth Proportional to 2,986,380.99, 4,121,555.76 and 1,697,415.21
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Solution
The fourth proportional to 2,986,380.99, 4,121,555.76 and 1,697,415.21 is: 2,342,631.92
Step by Step Solution
- Step 1: Write the proportion equation
2,986,380.99 : 4,121,555.76 = 1,697,415.21 : x - Step 2: Convert to fraction form
2,986,380.99/4,121,555.76 = 1,697,415.21/x - Step 3: Cross multiply
2,986,380.99x = 4,121,555.76 × 1,697,415.21 - Step 4: Simplify right side
2,986,380.99x = 6,995,991,435,887.11 - Step 5: Solve for x
x = 6,995,991,435,887.11/2,986,380.99 - Step 6: Final answer
x = 2,342,631.92
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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.