Finding the Fourth Proportional to 1,040,014.20, 1,560,021.30 and 679,207.80
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Solution
The fourth proportional to 1,040,014.20, 1,560,021.30 and 679,207.80 is: 1,018,811.70
Step by Step Solution
- Step 1: Write the proportion equation
1,040,014.20 : 1,560,021.30 = 679,207.80 : x - Step 2: Convert to fraction form
1,040,014.20/1,560,021.30 = 679,207.80/x - Step 3: Cross multiply
1,040,014.20x = 1,560,021.30 × 679,207.80 - Step 4: Simplify right side
1,040,014.20x = 1,059,578,635,126.14 - Step 5: Solve for x
x = 1,059,578,635,126.14/1,040,014.20 - Step 6: Final answer
x = 1,018,811.70
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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.