Finding the Fourth Proportional to 3,157,957.10, 4,357,729.36 and 1,780,859.09
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Solution
The fourth proportional to 3,157,957.10, 4,357,729.36 and 1,780,859.09 is: 2,457,443.75
Step by Step Solution
- Step 1: Write the proportion equation
3,157,957.10 : 4,357,729.36 = 1,780,859.09 : x - Step 2: Convert to fraction form
3,157,957.10/4,357,729.36 = 1,780,859.09/x - Step 3: Cross multiply
3,157,957.10x = 4,357,729.36 × 1,780,859.09 - Step 4: Simplify right side
3,157,957.10x = 7,760,501,955,636.28 - Step 5: Solve for x
x = 7,760,501,955,636.28/3,157,957.10 - Step 6: Final answer
x = 2,457,443.75
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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.