Finding the Fourth Proportional to 6,418,739.77, 8,858,075.09 and 3,518,138.07
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Solution
The fourth proportional to 6,418,739.77, 8,858,075.09 and 3,518,138.07 is: 4,855,147.94
Step by Step Solution
- Step 1: Write the proportion equation
6,418,739.77 : 8,858,075.09 = 3,518,138.07 : x - Step 2: Convert to fraction form
6,418,739.77/8,858,075.09 = 3,518,138.07/x - Step 3: Cross multiply
6,418,739.77x = 8,858,075.09 × 3,518,138.07 - Step 4: Simplify right side
6,418,739.77x = 31,163,931,183,456.99 - Step 5: Solve for x
x = 31,163,931,183,456.99/6,418,739.77 - Step 6: Final answer
x = 4,855,147.94
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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.