Home / 685,501.28-1,028,429.38-401,431.84

Finding the Fourth Proportional to 685,501.28, 1,028,429.38 and 401,431.84

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Solution

The fourth proportional to 685,501.28, 1,028,429.38 and 401,431.84 is: 602,251.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,501.28 : 1,028,429.38 = 401,431.84 : x
  2. Step 2: Convert to fraction form
    685,501.28/1,028,429.38 = 401,431.84/x
  3. Step 3: Cross multiply
    685,501.28x = 1,028,429.38 × 401,431.84
  4. Step 4: Simplify right side
    685,501.28x = 412,844,298,323.46
  5. Step 5: Solve for x
    x = 412,844,298,323.46/685,501.28
  6. Step 6: Final answer
    x = 602,251.68

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Double scale
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Similar ratio
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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.