Home / 521,845.96-720,017.76-330,789.64

Finding the Fourth Proportional to 521,845.96, 720,017.76 and 330,789.64

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Solution

The fourth proportional to 521,845.96, 720,017.76 and 330,789.64 is: 456,407.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,845.96 : 720,017.76 = 330,789.64 : x
  2. Step 2: Convert to fraction form
    521,845.96/720,017.76 = 330,789.64/x
  3. Step 3: Cross multiply
    521,845.96x = 720,017.76 × 330,789.64
  4. Step 4: Simplify right side
    521,845.96x = 238,174,415,624.01
  5. Step 5: Solve for x
    x = 238,174,415,624.01/521,845.96
  6. Step 6: Final answer
    x = 456,407.51

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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.