Home / 685,428.36-1,028,116.92-179,984.76

Finding the Fourth Proportional to 685,428.36, 1,028,116.92 and 179,984.76

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Solution

The fourth proportional to 685,428.36, 1,028,116.92 and 179,984.76 is: 269,970.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,428.36 : 1,028,116.92 = 179,984.76 : x
  2. Step 2: Convert to fraction form
    685,428.36/1,028,116.92 = 179,984.76/x
  3. Step 3: Cross multiply
    685,428.36x = 1,028,116.92 × 179,984.76
  4. Step 4: Simplify right side
    685,428.36x = 185,045,377,098.14
  5. Step 5: Solve for x
    x = 185,045,377,098.14/685,428.36
  6. Step 6: Final answer
    x = 269,970.41

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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.