Finding the Fourth Proportional to 3,421,700.80, 4,722,999.36 and 1,972,364.96
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Solution
The fourth proportional to 3,421,700.80, 4,722,999.36 and 1,972,364.96 is: 2,722,470.19
Step by Step Solution
- Step 1: Write the proportion equation
3,421,700.80 : 4,722,999.36 = 1,972,364.96 : x - Step 2: Convert to fraction form
3,421,700.80/4,722,999.36 = 1,972,364.96/x - Step 3: Cross multiply
3,421,700.80x = 4,722,999.36 × 1,972,364.96 - Step 4: Simplify right side
3,421,700.80x = 9,315,478,443,766.43 - Step 5: Solve for x
x = 9,315,478,443,766.43/3,421,700.80 - Step 6: Final answer
x = 2,722,470.19
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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.