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Finding the Fourth Proportional to 555,072.87, 766,019.13 and 340,171.44

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Solution

The fourth proportional to 555,072.87, 766,019.13 and 340,171.44 is: 469,447.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,072.87 : 766,019.13 = 340,171.44 : x
  2. Step 2: Convert to fraction form
    555,072.87/766,019.13 = 340,171.44/x
  3. Step 3: Cross multiply
    555,072.87x = 766,019.13 × 340,171.44
  4. Step 4: Simplify right side
    555,072.87x = 260,577,830,519.65
  5. Step 5: Solve for x
    x = 260,577,830,519.65/555,072.87
  6. Step 6: Final answer
    x = 469,447.97

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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.