Home / 420,774.08-580,664.32-229,786.88

Finding the Fourth Proportional to 420,774.08, 580,664.32 and 229,786.88

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Solution

The fourth proportional to 420,774.08, 580,664.32 and 229,786.88 is: 317,103.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,774.08 : 580,664.32 = 229,786.88 : x
  2. Step 2: Convert to fraction form
    420,774.08/580,664.32 = 229,786.88/x
  3. Step 3: Cross multiply
    420,774.08x = 580,664.32 × 229,786.88
  4. Step 4: Simplify right side
    420,774.08x = 133,429,042,420.12
  5. Step 5: Solve for x
    x = 133,429,042,420.12/420,774.08
  6. Step 6: Final answer
    x = 317,103.76

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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.