Finding the Fourth Proportional to 1,138,821.74, 1,571,592.68 and 679,976.43
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Solution
The fourth proportional to 1,138,821.74, 1,571,592.68 and 679,976.43 is: 938,378.63
Step by Step Solution
- Step 1: Write the proportion equation
1,138,821.74 : 1,571,592.68 = 679,976.43 : x - Step 2: Convert to fraction form
1,138,821.74/1,571,592.68 = 679,976.43/x - Step 3: Cross multiply
1,138,821.74x = 1,571,592.68 × 679,976.43 - Step 4: Simplify right side
1,138,821.74x = 1,068,645,979,960.53 - Step 5: Solve for x
x = 1,068,645,979,960.53/1,138,821.74 - Step 6: Final answer
x = 938,378.63
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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.