Home / 427,905.45-590,468.40-255,789.09

Finding the Fourth Proportional to 427,905.45, 590,468.40 and 255,789.09

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Solution

The fourth proportional to 427,905.45, 590,468.40 and 255,789.09 is: 352,964.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,905.45 : 590,468.40 = 255,789.09 : x
  2. Step 2: Convert to fraction form
    427,905.45/590,468.40 = 255,789.09/x
  3. Step 3: Cross multiply
    427,905.45x = 590,468.40 × 255,789.09
  4. Step 4: Simplify right side
    427,905.45x = 151,035,374,709.76
  5. Step 5: Solve for x
    x = 151,035,374,709.76/427,905.45
  6. Step 6: Final answer
    x = 352,964.36

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1.5x scale

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.