Finding the Fourth Proportional to 2,543,432.40, 3,813,982.20 and 1,122,757.20
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Solution
The fourth proportional to 2,543,432.40, 3,813,982.20 and 1,122,757.20 is: 1,683,620.91
Step by Step Solution
- Step 1: Write the proportion equation
2,543,432.40 : 3,813,982.20 = 1,122,757.20 : x - Step 2: Convert to fraction form
2,543,432.40/3,813,982.20 = 1,122,757.20/x - Step 3: Cross multiply
2,543,432.40x = 3,813,982.20 × 1,122,757.20 - Step 4: Simplify right side
2,543,432.40x = 4,282,175,975,721.84 - Step 5: Solve for x
x = 4,282,175,975,721.84/2,543,432.40 - Step 6: Final answer
x = 1,683,620.91
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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.