Home / 685,416.54-1,028,370.78-306,305.52

Finding the Fourth Proportional to 685,416.54, 1,028,370.78 and 306,305.52

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Solution

The fourth proportional to 685,416.54, 1,028,370.78 and 306,305.52 is: 459,568.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,416.54 : 1,028,370.78 = 306,305.52 : x
  2. Step 2: Convert to fraction form
    685,416.54/1,028,370.78 = 306,305.52/x
  3. Step 3: Cross multiply
    685,416.54x = 1,028,370.78 × 306,305.52
  4. Step 4: Simplify right side
    685,416.54x = 314,995,646,520.71
  5. Step 5: Solve for x
    x = 314,995,646,520.71/685,416.54
  6. Step 6: Final answer
    x = 459,568.20

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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.