Home / 567,422.20-783,030-312,772.78

Finding the Fourth Proportional to 567,422.20, 783,030 and 312,772.78

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Solution

The fourth proportional to 567,422.20, 783,030 and 312,772.78 is: 431,619.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,422.20 : 783,030 = 312,772.78 : x
  2. Step 2: Convert to fraction form
    567,422.20/783,030 = 312,772.78/x
  3. Step 3: Cross multiply
    567,422.20x = 783,030 × 312,772.78
  4. Step 4: Simplify right side
    567,422.20x = 244,910,469,923.40
  5. Step 5: Solve for x
    x = 244,910,469,923.40/567,422.20
  6. Step 6: Final answer
    x = 431,619.47

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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.