Finding the Fourth Proportional to 7,219,729.01, 9,963,234.66 and 3,912,020.84
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Solution
The fourth proportional to 7,219,729.01, 9,963,234.66 and 3,912,020.84 is: 5,398,593.43
Step by Step Solution
- Step 1: Write the proportion equation
7,219,729.01 : 9,963,234.66 = 3,912,020.84 : x - Step 2: Convert to fraction form
7,219,729.01/9,963,234.66 = 3,912,020.84/x - Step 3: Cross multiply
7,219,729.01x = 9,963,234.66 × 3,912,020.84 - Step 4: Simplify right side
7,219,729.01x = 38,976,381,623,730.31 - Step 5: Solve for x
x = 38,976,381,623,730.31/7,219,729.01 - Step 6: Final answer
x = 5,398,593.43
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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.