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Finding the Fourth Proportional to 874,250.69, 1,206,503.03 and 487,065.76

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Solution

The fourth proportional to 874,250.69, 1,206,503.03 and 487,065.76 is: 672,171.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    874,250.69 : 1,206,503.03 = 487,065.76 : x
  2. Step 2: Convert to fraction form
    874,250.69/1,206,503.03 = 487,065.76/x
  3. Step 3: Cross multiply
    874,250.69x = 1,206,503.03 × 487,065.76
  4. Step 4: Simplify right side
    874,250.69x = 587,646,313,450.66
  5. Step 5: Solve for x
    x = 587,646,313,450.66/874,250.69
  6. Step 6: Final answer
    x = 672,171.41

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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.