Finding the Fourth Proportional to 2,128,126.90, 3,192,190.35 and 1,330,309.30
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Solution
The fourth proportional to 2,128,126.90, 3,192,190.35 and 1,330,309.30 is: 1,995,463.95
Step by Step Solution
- Step 1: Write the proportion equation
2,128,126.90 : 3,192,190.35 = 1,330,309.30 : x - Step 2: Convert to fraction form
2,128,126.90/3,192,190.35 = 1,330,309.30/x - Step 3: Cross multiply
2,128,126.90x = 3,192,190.35 × 1,330,309.30 - Step 4: Simplify right side
2,128,126.90x = 4,246,600,509,975.26 - Step 5: Solve for x
x = 4,246,600,509,975.26/2,128,126.90 - Step 6: Final answer
x = 1,995,463.95
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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.