Finding the Fourth Proportional to 3,179,130.32, 4,387,230.97 and 1,728,857.09
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Solution
The fourth proportional to 3,179,130.32, 4,387,230.97 and 1,728,857.09 is: 2,385,839.71
Step by Step Solution
- Step 1: Write the proportion equation
3,179,130.32 : 4,387,230.97 = 1,728,857.09 : x - Step 2: Convert to fraction form
3,179,130.32/4,387,230.97 = 1,728,857.09/x - Step 3: Cross multiply
3,179,130.32x = 4,387,230.97 × 1,728,857.09 - Step 4: Simplify right side
3,179,130.32x = 7,584,895,341,693.78 - Step 5: Solve for x
x = 7,584,895,341,693.78/3,179,130.32 - Step 6: Final answer
x = 2,385,839.71
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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.