Finding the Fourth Proportional to 1,221,722.20, 1,833,020.70 and 511,967.80
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Solution
The fourth proportional to 1,221,722.20, 1,833,020.70 and 511,967.80 is: 768,134.99
Step by Step Solution
- Step 1: Write the proportion equation
1,221,722.20 : 1,833,020.70 = 511,967.80 : x - Step 2: Convert to fraction form
1,221,722.20/1,833,020.70 = 511,967.80/x - Step 3: Cross multiply
1,221,722.20x = 1,833,020.70 × 511,967.80 - Step 4: Simplify right side
1,221,722.20x = 938,447,575,133.46 - Step 5: Solve for x
x = 938,447,575,133.46/1,221,722.20 - Step 6: Final answer
x = 768,134.99
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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.