Home / 422,783.28-634,320.78-264,823.56

Finding the Fourth Proportional to 422,783.28, 634,320.78 and 264,823.56

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Solution

The fourth proportional to 422,783.28, 634,320.78 and 264,823.56 is: 397,326.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,783.28 : 634,320.78 = 264,823.56 : x
  2. Step 2: Convert to fraction form
    422,783.28/634,320.78 = 264,823.56/x
  3. Step 3: Cross multiply
    422,783.28x = 634,320.78 × 264,823.56
  4. Step 4: Simplify right side
    422,783.28x = 167,983,087,141.58
  5. Step 5: Solve for x
    x = 167,983,087,141.58/422,783.28
  6. Step 6: Final answer
    x = 397,326.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.