Finding the Fourth Proportional to 838,603.80, 1,257,905.70 and 765,120.60
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Solution
The fourth proportional to 838,603.80, 1,257,905.70 and 765,120.60 is: 1,147,680.90
Step by Step Solution
- Step 1: Write the proportion equation
838,603.80 : 1,257,905.70 = 765,120.60 : x - Step 2: Convert to fraction form
838,603.80/1,257,905.70 = 765,120.60/x - Step 3: Cross multiply
838,603.80x = 1,257,905.70 × 765,120.60 - Step 4: Simplify right side
838,603.80x = 962,449,563,927.42 - Step 5: Solve for x
x = 962,449,563,927.42/838,603.80 - Step 6: Final answer
x = 1,147,680.90
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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.