Finding the Fourth Proportional to 1,689,138.99, 2,533,707.84 and 678,260.64
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Solution
The fourth proportional to 1,689,138.99, 2,533,707.84 and 678,260.64 is: 1,017,390.70
Step by Step Solution
- Step 1: Write the proportion equation
1,689,138.99 : 2,533,707.84 = 678,260.64 : x - Step 2: Convert to fraction form
1,689,138.99/2,533,707.84 = 678,260.64/x - Step 3: Cross multiply
1,689,138.99x = 2,533,707.84 × 678,260.64 - Step 4: Simplify right side
1,689,138.99x = 1,718,514,301,131.42 - Step 5: Solve for x
x = 1,718,514,301,131.42/1,689,138.99 - Step 6: Final answer
x = 1,017,390.70
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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.