Finding the Fourth Proportional to 1,278,541.62, 1,917,313.83 and 479,387.70
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Solution
The fourth proportional to 1,278,541.62, 1,917,313.83 and 479,387.70 is: 718,894.60
Step by Step Solution
- Step 1: Write the proportion equation
1,278,541.62 : 1,917,313.83 = 479,387.70 : x - Step 2: Convert to fraction form
1,278,541.62/1,917,313.83 = 479,387.70/x - Step 3: Cross multiply
1,278,541.62x = 1,917,313.83 × 479,387.70 - Step 4: Simplify right side
1,278,541.62x = 919,136,667,141.89 - Step 5: Solve for x
x = 919,136,667,141.89/1,278,541.62 - Step 6: Final answer
x = 718,894.60
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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.