Finding the Fourth Proportional to 2,120,708.70, 2,926,608.12 and 1,153,839.78
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Solution
The fourth proportional to 2,120,708.70, 2,926,608.12 and 1,153,839.78 is: 1,592,315.28
Step by Step Solution
- Step 1: Write the proportion equation
2,120,708.70 : 2,926,608.12 = 1,153,839.78 : x - Step 2: Convert to fraction form
2,120,708.70/2,926,608.12 = 1,153,839.78/x - Step 3: Cross multiply
2,120,708.70x = 2,926,608.12 × 1,153,839.78 - Step 4: Simplify right side
2,120,708.70x = 3,376,836,869,327.01 - Step 5: Solve for x
x = 3,376,836,869,327.01/2,120,708.70 - Step 6: Final answer
x = 1,592,315.28
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.