Finding the Fourth Proportional to 5,239,728.74, 7,230,247.18 and 2,947,850.66
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Solution
The fourth proportional to 5,239,728.74, 7,230,247.18 and 2,947,850.66 is: 4,067,708.46
Step by Step Solution
- Step 1: Write the proportion equation
5,239,728.74 : 7,230,247.18 = 2,947,850.66 : x - Step 2: Convert to fraction form
5,239,728.74/7,230,247.18 = 2,947,850.66/x - Step 3: Cross multiply
5,239,728.74x = 7,230,247.18 × 2,947,850.66 - Step 4: Simplify right side
5,239,728.74x = 21,313,688,878,005.28 - Step 5: Solve for x
x = 21,313,688,878,005.28/5,239,728.74 - Step 6: Final answer
x = 4,067,708.46
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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.