Home / 685,429.36-1,028,118.42-179,985.76

Finding the Fourth Proportional to 685,429.36, 1,028,118.42 and 179,985.76

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Solution

The fourth proportional to 685,429.36, 1,028,118.42 and 179,985.76 is: 269,971.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,429.36 : 1,028,118.42 = 179,985.76 : x
  2. Step 2: Convert to fraction form
    685,429.36/1,028,118.42 = 179,985.76/x
  3. Step 3: Cross multiply
    685,429.36x = 1,028,118.42 × 179,985.76
  4. Step 4: Simplify right side
    685,429.36x = 185,046,675,193.70
  5. Step 5: Solve for x
    x = 185,046,675,193.70/685,429.36
  6. Step 6: Final answer
    x = 269,971.91

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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.