Finding the Fourth Proportional to 19,305,661.20, 28,956,418.20 and 5,122,237.20
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Solution
The fourth proportional to 19,305,661.20, 28,956,418.20 and 5,122,237.20 is: 7,682,805.63
Step by Step Solution
- Step 1: Write the proportion equation
19,305,661.20 : 28,956,418.20 = 5,122,237.20 : x - Step 2: Convert to fraction form
19,305,661.20/28,956,418.20 = 5,122,237.20/x - Step 3: Cross multiply
19,305,661.20x = 28,956,418.20 × 5,122,237.20 - Step 4: Simplify right side
19,305,661.20x = 148,321,642,482,797.03 - Step 5: Solve for x
x = 148,321,642,482,797.03/19,305,661.20 - Step 6: Final answer
x = 7,682,805.63
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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.