Finding the Fourth Proportional to 1,421,750.40, 2,129,860.80 and 789,532.80
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Solution
The fourth proportional to 1,421,750.40, 2,129,860.80 and 789,532.80 is: 1,182,763.84
Step by Step Solution
- Step 1: Write the proportion equation
1,421,750.40 : 2,129,860.80 = 789,532.80 : x - Step 2: Convert to fraction form
1,421,750.40/2,129,860.80 = 789,532.80/x - Step 3: Cross multiply
1,421,750.40x = 2,129,860.80 × 789,532.80 - Step 4: Simplify right side
1,421,750.40x = 1,681,594,961,034.24 - Step 5: Solve for x
x = 1,681,594,961,034.24/1,421,750.40 - Step 6: Final answer
x = 1,182,763.84
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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.