Finding the Fourth Proportional to 1,388,107.19, 1,915,577.10 and 776,261.14
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Solution
The fourth proportional to 1,388,107.19, 1,915,577.10 and 776,261.14 is: 1,071,234.32
Step by Step Solution
- Step 1: Write the proportion equation
1,388,107.19 : 1,915,577.10 = 776,261.14 : x - Step 2: Convert to fraction form
1,388,107.19/1,915,577.10 = 776,261.14/x - Step 3: Cross multiply
1,388,107.19x = 1,915,577.10 × 776,261.14 - Step 4: Simplify right side
1,388,107.19x = 1,486,988,058,614.95 - Step 5: Solve for x
x = 1,486,988,058,614.95/1,388,107.19 - Step 6: Final answer
x = 1,071,234.32
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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.