Finding the Fourth Proportional to 3,866,139.24, 5,335,272.32 and 2,147,419.68
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Solution
The fourth proportional to 3,866,139.24, 5,335,272.32 and 2,147,419.68 is: 2,963,439.25
Step by Step Solution
- Step 1: Write the proportion equation
3,866,139.24 : 5,335,272.32 = 2,147,419.68 : x - Step 2: Convert to fraction form
3,866,139.24/5,335,272.32 = 2,147,419.68/x - Step 3: Cross multiply
3,866,139.24x = 5,335,272.32 × 2,147,419.68 - Step 4: Simplify right side
3,866,139.24x = 11,457,068,778,127.26 - Step 5: Solve for x
x = 11,457,068,778,127.26/3,866,139.24 - Step 6: Final answer
x = 2,963,439.25
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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.