Home / 685,260.51-1,028,101.10-306,499.92

Finding the Fourth Proportional to 685,260.51, 1,028,101.10 and 306,499.92

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Solution

The fourth proportional to 685,260.51, 1,028,101.10 and 306,499.92 is: 459,843.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,260.51 : 1,028,101.10 = 306,499.92 : x
  2. Step 2: Convert to fraction form
    685,260.51/1,028,101.10 = 306,499.92/x
  3. Step 3: Cross multiply
    685,260.51x = 1,028,101.10 × 306,499.92
  4. Step 4: Simplify right side
    685,260.51x = 315,112,903,369.41
  5. Step 5: Solve for x
    x = 315,112,903,369.41/685,260.51
  6. Step 6: Final answer
    x = 459,843.96

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1.5x scale

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.