Home / 420,623.43-580,433.31-229,636.41

Finding the Fourth Proportional to 420,623.43, 580,433.31 and 229,636.41

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Solution

The fourth proportional to 420,623.43, 580,433.31 and 229,636.41 is: 316,883.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,623.43 : 580,433.31 = 229,636.41 : x
  2. Step 2: Convert to fraction form
    420,623.43/580,433.31 = 229,636.41/x
  3. Step 3: Cross multiply
    420,623.43x = 580,433.31 × 229,636.41
  4. Step 4: Simplify right side
    420,623.43x = 133,288,621,552.82
  5. Step 5: Solve for x
    x = 133,288,621,552.82/420,623.43
  6. Step 6: Final answer
    x = 316,883.49

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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.