Finding the Fourth Proportional to 3,138,371.28, 4,330,824.84 and 1,780,215.12
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Solution
The fourth proportional to 3,138,371.28, 4,330,824.84 and 1,780,215.12 is: 2,456,624.53
Step by Step Solution
- Step 1: Write the proportion equation
3,138,371.28 : 4,330,824.84 = 1,780,215.12 : x - Step 2: Convert to fraction form
3,138,371.28/4,330,824.84 = 1,780,215.12/x - Step 3: Cross multiply
3,138,371.28x = 4,330,824.84 × 1,780,215.12 - Step 4: Simplify right side
3,138,371.28x = 7,709,799,862,239.58 - Step 5: Solve for x
x = 7,709,799,862,239.58/3,138,371.28 - Step 6: Final answer
x = 2,456,624.53
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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.