Finding the Fourth Proportional to 3,138,366.28, 4,330,817.94 and 1,780,210.12
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Solution
The fourth proportional to 3,138,366.28, 4,330,817.94 and 1,780,210.12 is: 2,456,617.63
Step by Step Solution
- Step 1: Write the proportion equation
3,138,366.28 : 4,330,817.94 = 1,780,210.12 : x - Step 2: Convert to fraction form
3,138,366.28/4,330,817.94 = 1,780,210.12/x - Step 3: Cross multiply
3,138,366.28x = 4,330,817.94 × 1,780,210.12 - Step 4: Simplify right side
3,138,366.28x = 7,709,765,924,665.55 - Step 5: Solve for x
x = 7,709,765,924,665.55/3,138,366.28 - Step 6: Final answer
x = 2,456,617.63
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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.