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Finding the Fourth Proportional to 554,969.46, 765,857.86 and 300,320.65

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Solution

The fourth proportional to 554,969.46, 765,857.86 and 300,320.65 is: 414,442.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,969.46 : 765,857.86 = 300,320.65 : x
  2. Step 2: Convert to fraction form
    554,969.46/765,857.86 = 300,320.65/x
  3. Step 3: Cross multiply
    554,969.46x = 765,857.86 × 300,320.65
  4. Step 4: Simplify right side
    554,969.46x = 230,002,930,529.33
  5. Step 5: Solve for x
    x = 230,002,930,529.33/554,969.46
  6. Step 6: Final answer
    x = 414,442.50

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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.