Finding the Fourth Proportional to 1,211,862.09, 1,817,839.08 and 453,623.70
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Solution
The fourth proportional to 1,211,862.09, 1,817,839.08 and 453,623.70 is: 680,452.75
Step by Step Solution
- Step 1: Write the proportion equation
1,211,862.09 : 1,817,839.08 = 453,623.70 : x - Step 2: Convert to fraction form
1,211,862.09/1,817,839.08 = 453,623.70/x - Step 3: Cross multiply
1,211,862.09x = 1,817,839.08 × 453,623.70 - Step 4: Simplify right side
1,211,862.09x = 824,614,889,474.20 - Step 5: Solve for x
x = 824,614,889,474.20/1,211,862.09 - Step 6: Final answer
x = 680,452.75
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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.