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Finding the Fourth Proportional to 1,330,668.82, 1,836,340.50 and 757,711.28

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Solution

The fourth proportional to 1,330,668.82, 1,836,340.50 and 757,711.28 is: 1,045,651.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330,668.82 : 1,836,340.50 = 757,711.28 : x
  2. Step 2: Convert to fraction form
    1,330,668.82/1,836,340.50 = 757,711.28/x
  3. Step 3: Cross multiply
    1,330,668.82x = 1,836,340.50 × 757,711.28
  4. Step 4: Simplify right side
    1,330,668.82x = 1,391,415,910,770.84
  5. Step 5: Solve for x
    x = 1,391,415,910,770.84/1,330,668.82
  6. Step 6: Final answer
    x = 1,045,651.55

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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.