Finding the Fourth Proportional to 1,214,139.30, 1,821,141.99 and 372,690.78
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Solution
The fourth proportional to 1,214,139.30, 1,821,141.99 and 372,690.78 is: 559,015.62
Step by Step Solution
- Step 1: Write the proportion equation
1,214,139.30 : 1,821,141.99 = 372,690.78 : x - Step 2: Convert to fraction form
1,214,139.30/1,821,141.99 = 372,690.78/x - Step 3: Cross multiply
1,214,139.30x = 1,821,141.99 × 372,690.78 - Step 4: Simplify right side
1,214,139.30x = 678,722,828,743.85 - Step 5: Solve for x
x = 678,722,828,743.85/1,214,139.30 - Step 6: Final answer
x = 559,015.62
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.