Finding the Fourth Proportional to 2,129,453.55, 2,939,972.36 and 1,355,521.23
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Solution
The fourth proportional to 2,129,453.55, 2,939,972.36 and 1,355,521.23 is: 1,871,463.66
Step by Step Solution
- Step 1: Write the proportion equation
2,129,453.55 : 2,939,972.36 = 1,355,521.23 : x - Step 2: Convert to fraction form
2,129,453.55/2,939,972.36 = 1,355,521.23/x - Step 3: Cross multiply
2,129,453.55x = 2,939,972.36 × 1,355,521.23 - Step 4: Simplify right side
2,129,453.55x = 3,985,194,942,815.60 - Step 5: Solve for x
x = 3,985,194,942,815.60/2,129,453.55 - Step 6: Final answer
x = 1,871,463.66
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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.