Finding the Fourth Proportional to 5,387,021.29, 7,434,247.12 and 2,939,790.03
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Solution
The fourth proportional to 5,387,021.29, 7,434,247.12 and 2,939,790.03 is: 4,056,996.32
Step by Step Solution
- Step 1: Write the proportion equation
5,387,021.29 : 7,434,247.12 = 2,939,790.03 : x - Step 2: Convert to fraction form
5,387,021.29/7,434,247.12 = 2,939,790.03/x - Step 3: Cross multiply
5,387,021.29x = 7,434,247.12 × 2,939,790.03 - Step 4: Simplify right side
5,387,021.29x = 21,855,125,563,932.21 - Step 5: Solve for x
x = 21,855,125,563,932.21/5,387,021.29 - Step 6: Final answer
x = 4,056,996.32
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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.