Home / 685,845.29-1,028,601.78-286,269.46

Finding the Fourth Proportional to 685,845.29, 1,028,601.78 and 286,269.46

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Solution

The fourth proportional to 685,845.29, 1,028,601.78 and 286,269.46 is: 429,334.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,845.29 : 1,028,601.78 = 286,269.46 : x
  2. Step 2: Convert to fraction form
    685,845.29/1,028,601.78 = 286,269.46/x
  3. Step 3: Cross multiply
    685,845.29x = 1,028,601.78 × 286,269.46
  4. Step 4: Simplify right side
    685,845.29x = 294,457,273,544.13
  5. Step 5: Solve for x
    x = 294,457,273,544.13/685,845.29
  6. Step 6: Final answer
    x = 429,334.83

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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.