Finding the Fourth Proportional to 1,119,686.62, 1,545,121.69 and 629,642.19
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Solution
The fourth proportional to 1,119,686.62, 1,545,121.69 and 629,642.19 is: 868,880.44
Step by Step Solution
- Step 1: Write the proportion equation
1,119,686.62 : 1,545,121.69 = 629,642.19 : x - Step 2: Convert to fraction form
1,119,686.62/1,545,121.69 = 629,642.19/x - Step 3: Cross multiply
1,119,686.62x = 1,545,121.69 × 629,642.19 - Step 4: Simplify right side
1,119,686.62x = 972,873,796,776.70 - Step 5: Solve for x
x = 972,873,796,776.70/1,119,686.62 - Step 6: Final answer
x = 868,880.44
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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.