Home / 519,645.31-779,887.78-220,336.05

Finding the Fourth Proportional to 519,645.31, 779,887.78 and 220,336.05

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Solution

The fourth proportional to 519,645.31, 779,887.78 and 220,336.05 is: 330,682.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,645.31 : 779,887.78 = 220,336.05 : x
  2. Step 2: Convert to fraction form
    519,645.31/779,887.78 = 220,336.05/x
  3. Step 3: Cross multiply
    519,645.31x = 779,887.78 × 220,336.05
  4. Step 4: Simplify right side
    519,645.31x = 171,837,396,120.41
  5. Step 5: Solve for x
    x = 171,837,396,120.41/519,645.31
  6. Step 6: Final answer
    x = 330,682.09

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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.