Home / 420,579.54-580,400.64-229,596.12

Finding the Fourth Proportional to 420,579.54, 580,400.64 and 229,596.12

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Solution

The fourth proportional to 420,579.54, 580,400.64 and 229,596.12 is: 316,843.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,579.54 : 580,400.64 = 229,596.12 : x
  2. Step 2: Convert to fraction form
    420,579.54/580,400.64 = 229,596.12/x
  3. Step 3: Cross multiply
    420,579.54x = 580,400.64 × 229,596.12
  4. Step 4: Simplify right side
    420,579.54x = 133,257,734,989.52
  5. Step 5: Solve for x
    x = 133,257,734,989.52/420,579.54
  6. Step 6: Final answer
    x = 316,843.12

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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.