Finding the Fourth Proportional to 1,771,915.20, 2,444,392.80 and 1,287,729.60
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Solution
The fourth proportional to 1,771,915.20, 2,444,392.80 and 1,287,729.60 is: 1,776,448.99
Step by Step Solution
- Step 1: Write the proportion equation
1,771,915.20 : 2,444,392.80 = 1,287,729.60 : x - Step 2: Convert to fraction form
1,771,915.20/2,444,392.80 = 1,287,729.60/x - Step 3: Cross multiply
1,771,915.20x = 2,444,392.80 × 1,287,729.60 - Step 4: Simplify right side
1,771,915.20x = 3,147,716,962,586.88 - Step 5: Solve for x
x = 3,147,716,962,586.88/1,771,915.20 - Step 6: Final answer
x = 1,776,448.99
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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.