Finding the Fourth Proportional to 5,432,619.80, 8,148,929.70 and 4,172,907.80
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Solution
The fourth proportional to 5,432,619.80, 8,148,929.70 and 4,172,907.80 is: 6,259,361.70
Step by Step Solution
- Step 1: Write the proportion equation
5,432,619.80 : 8,148,929.70 = 4,172,907.80 : x - Step 2: Convert to fraction form
5,432,619.80/8,148,929.70 = 4,172,907.80/x - Step 3: Cross multiply
5,432,619.80x = 8,148,929.70 × 4,172,907.80 - Step 4: Simplify right side
5,432,619.80x = 34,004,732,306,781.66 - Step 5: Solve for x
x = 34,004,732,306,781.66/5,432,619.80 - Step 6: Final answer
x = 6,259,361.70
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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.