Finding the Fourth Proportional to 1,207,690.18, 1,811,534.09 and 309,130.47
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Solution
The fourth proportional to 1,207,690.18, 1,811,534.09 and 309,130.47 is: 463,695.40
Step by Step Solution
- Step 1: Write the proportion equation
1,207,690.18 : 1,811,534.09 = 309,130.47 : x - Step 2: Convert to fraction form
1,207,690.18/1,811,534.09 = 309,130.47/x - Step 3: Cross multiply
1,207,690.18x = 1,811,534.09 × 309,130.47 - Step 4: Simplify right side
1,207,690.18x = 560,000,384,662.72 - Step 5: Solve for x
x = 560,000,384,662.72/1,207,690.18 - Step 6: Final answer
x = 463,695.40
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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.