Home / 685,491.51-1,028,447.46-306,731.10

Finding the Fourth Proportional to 685,491.51, 1,028,447.46 and 306,731.10

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Solution

The fourth proportional to 685,491.51, 1,028,447.46 and 306,731.10 is: 460,190.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,491.51 : 1,028,447.46 = 306,731.10 : x
  2. Step 2: Convert to fraction form
    685,491.51/1,028,447.46 = 306,731.10/x
  3. Step 3: Cross multiply
    685,491.51x = 1,028,447.46 × 306,731.10
  4. Step 4: Simplify right side
    685,491.51x = 315,456,820,698.01
  5. Step 5: Solve for x
    x = 315,456,820,698.01/685,491.51
  6. Step 6: Final answer
    x = 460,190.70

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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.