Finding the Fourth Proportional to 2,159,658.84, 2,980,272.16 and 1,192,768.32
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Solution
The fourth proportional to 2,159,658.84, 2,980,272.16 and 1,192,768.32 is: 1,645,988.78
Step by Step Solution
- Step 1: Write the proportion equation
2,159,658.84 : 2,980,272.16 = 1,192,768.32 : x - Step 2: Convert to fraction form
2,159,658.84/2,980,272.16 = 1,192,768.32/x - Step 3: Cross multiply
2,159,658.84x = 2,980,272.16 × 1,192,768.32 - Step 4: Simplify right side
2,159,658.84x = 3,554,774,217,425.97 - Step 5: Solve for x
x = 3,554,774,217,425.97/2,159,658.84 - Step 6: Final answer
x = 1,645,988.78
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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.