Home / 420,027.40-579,894.78-259,102.36

Finding the Fourth Proportional to 420,027.40, 579,894.78 and 259,102.36

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Solution

The fourth proportional to 420,027.40, 579,894.78 and 259,102.36 is: 357,719.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,027.40 : 579,894.78 = 259,102.36 : x
  2. Step 2: Convert to fraction form
    420,027.40/579,894.78 = 259,102.36/x
  3. Step 3: Cross multiply
    420,027.40x = 579,894.78 × 259,102.36
  4. Step 4: Simplify right side
    420,027.40x = 150,252,106,049.68
  5. Step 5: Solve for x
    x = 150,252,106,049.68/420,027.40
  6. Step 6: Final answer
    x = 357,719.77

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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.