Finding the Fourth Proportional to 1,378,523.90, 1,902,415.44 and 766,720.88
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Solution
The fourth proportional to 1,378,523.90, 1,902,415.44 and 766,720.88 is: 1,058,103.99
Step by Step Solution
- Step 1: Write the proportion equation
1,378,523.90 : 1,902,415.44 = 766,720.88 : x - Step 2: Convert to fraction form
1,378,523.90/1,902,415.44 = 766,720.88/x - Step 3: Cross multiply
1,378,523.90x = 1,902,415.44 × 766,720.88 - Step 4: Simplify right side
1,378,523.90x = 1,458,621,640,282.39 - Step 5: Solve for x
x = 1,458,621,640,282.39/1,378,523.90 - Step 6: Final answer
x = 1,058,103.99
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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.