Finding the Fourth Proportional to 5,138,653.20, 7,090,824.20 and 2,846,385.68
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Solution
The fourth proportional to 5,138,653.20, 7,090,824.20 and 2,846,385.68 is: 3,927,725.74
Step by Step Solution
- Step 1: Write the proportion equation
5,138,653.20 : 7,090,824.20 = 2,846,385.68 : x - Step 2: Convert to fraction form
5,138,653.20/7,090,824.20 = 2,846,385.68/x - Step 3: Cross multiply
5,138,653.20x = 7,090,824.20 × 2,846,385.68 - Step 4: Simplify right side
5,138,653.20x = 20,183,220,462,277.46 - Step 5: Solve for x
x = 20,183,220,462,277.46/5,138,653.20 - Step 6: Final answer
x = 3,927,725.74
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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.