Home / 420,626.43-580,437.45-229,639.41

Finding the Fourth Proportional to 420,626.43, 580,437.45 and 229,639.41

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Solution

The fourth proportional to 420,626.43, 580,437.45 and 229,639.41 is: 316,887.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,626.43 : 580,437.45 = 229,639.41 : x
  2. Step 2: Convert to fraction form
    420,626.43/580,437.45 = 229,639.41/x
  3. Step 3: Cross multiply
    420,626.43x = 580,437.45 × 229,639.41
  4. Step 4: Simplify right side
    420,626.43x = 133,291,313,559.91
  5. Step 5: Solve for x
    x = 133,291,313,559.91/420,626.43
  6. Step 6: Final answer
    x = 316,887.63

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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.