Finding the Fourth Proportional to 1,192,063.12, 1,645,656.63 and 919,519.18
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Solution
The fourth proportional to 1,192,063.12, 1,645,656.63 and 919,519.18 is: 1,269,406.64
Step by Step Solution
- Step 1: Write the proportion equation
1,192,063.12 : 1,645,656.63 = 919,519.18 : x - Step 2: Convert to fraction form
1,192,063.12/1,645,656.63 = 919,519.18/x - Step 3: Cross multiply
1,192,063.12x = 1,645,656.63 × 919,519.18 - Step 4: Simplify right side
1,192,063.12x = 1,513,212,834,979.16 - Step 5: Solve for x
x = 1,513,212,834,979.16/1,192,063.12 - Step 6: Final answer
x = 1,269,406.64
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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.