Finding the Fourth Proportional to 2,078,821.31, 3,118,239.63 and 639,494.75
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Solution
The fourth proportional to 2,078,821.31, 3,118,239.63 and 639,494.75 is: 959,244.47
Step by Step Solution
- Step 1: Write the proportion equation
2,078,821.31 : 3,118,239.63 = 639,494.75 : x - Step 2: Convert to fraction form
2,078,821.31/3,118,239.63 = 639,494.75/x - Step 3: Cross multiply
2,078,821.31x = 3,118,239.63 × 639,494.75 - Step 4: Simplify right side
2,078,821.31x = 1,994,097,853,838.27 - Step 5: Solve for x
x = 1,994,097,853,838.27/2,078,821.31 - Step 6: Final answer
x = 959,244.47
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1.5x scale
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.