Home / 418,823.10-628,550.39-306,790.38

Finding the Fourth Proportional to 418,823.10, 628,550.39 and 306,790.38

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Solution

The fourth proportional to 418,823.10, 628,550.39 and 306,790.38 is: 460,416.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,823.10 : 628,550.39 = 306,790.38 : x
  2. Step 2: Convert to fraction form
    418,823.10/628,550.39 = 306,790.38/x
  3. Step 3: Cross multiply
    418,823.10x = 628,550.39 × 306,790.38
  4. Step 4: Simplify right side
    418,823.10x = 192,833,213,764.22
  5. Step 5: Solve for x
    x = 192,833,213,764.22/418,823.10
  6. Step 6: Final answer
    x = 460,416.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.