Finding the Fourth Proportional to 7,172,115.48, 9,897,230.61 and 3,908,859.98
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Solution
The fourth proportional to 7,172,115.48, 9,897,230.61 and 3,908,859.98 is: 5,394,069.39
Step by Step Solution
- Step 1: Write the proportion equation
7,172,115.48 : 9,897,230.61 = 3,908,859.98 : x - Step 2: Convert to fraction form
7,172,115.48/9,897,230.61 = 3,908,859.98/x - Step 3: Cross multiply
7,172,115.48x = 9,897,230.61 × 3,908,859.98 - Step 4: Simplify right side
7,172,115.48x = 38,686,888,594,773.84 - Step 5: Solve for x
x = 38,686,888,594,773.84/7,172,115.48 - Step 6: Final answer
x = 5,394,069.39
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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.