Finding the Fourth Proportional to 2,115,069.05, 2,918,798.91 and 1,209,651.05
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Solution
The fourth proportional to 2,115,069.05, 2,918,798.91 and 1,209,651.05 is: 1,669,320.51
Step by Step Solution
- Step 1: Write the proportion equation
2,115,069.05 : 2,918,798.91 = 1,209,651.05 : x - Step 2: Convert to fraction form
2,115,069.05/2,918,798.91 = 1,209,651.05/x - Step 3: Cross multiply
2,115,069.05x = 2,918,798.91 × 1,209,651.05 - Step 4: Simplify right side
2,115,069.05x = 3,530,728,145,578.11 - Step 5: Solve for x
x = 3,530,728,145,578.11/2,115,069.05 - Step 6: Final answer
x = 1,669,320.51
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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.