Finding the Fourth Proportional to 1,243,724.51, 1,865,912.58 and 390,761.70
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Solution
The fourth proportional to 1,243,724.51, 1,865,912.58 and 390,761.70 is: 586,244.92
Step by Step Solution
- Step 1: Write the proportion equation
1,243,724.51 : 1,865,912.58 = 390,761.70 : x - Step 2: Convert to fraction form
1,243,724.51/1,865,912.58 = 390,761.70/x - Step 3: Cross multiply
1,243,724.51x = 1,865,912.58 × 390,761.70 - Step 4: Simplify right side
1,243,724.51x = 729,127,171,812.19 - Step 5: Solve for x
x = 729,127,171,812.19/1,243,724.51 - Step 6: Final answer
x = 586,244.92
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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.