Finding the Fourth Proportional to 455,521,839.97, 628,620,745.40 and 246,678,342.79
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Solution
The fourth proportional to 455,521,839.97, 628,620,745.40 and 246,678,342.79 is: 340,416,441.35
Step by Step Solution
- Step 1: Write the proportion equation
455,521,839.97 : 628,620,745.40 = 246,678,342.79 : x - Step 2: Convert to fraction form
455,521,839.97/628,620,745.40 = 246,678,342.79/x - Step 3: Cross multiply
455,521,839.97x = 628,620,745.40 × 246,678,342.79 - Step 4: Simplify right side
455,521,839.97x = 155,067,123,718,686,496 - Step 5: Solve for x
x = 155,067,123,718,686,496/455,521,839.97 - Step 6: Final answer
x = 340,416,441.35
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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.