Home / 685,659.92-1,028,654.20-286,078.62

Finding the Fourth Proportional to 685,659.92, 1,028,654.20 and 286,078.62

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Solution

The fourth proportional to 685,659.92, 1,028,654.20 and 286,078.62 is: 429,186.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,659.92 : 1,028,654.20 = 286,078.62 : x
  2. Step 2: Convert to fraction form
    685,659.92/1,028,654.20 = 286,078.62/x
  3. Step 3: Cross multiply
    685,659.92x = 1,028,654.20 × 286,078.62
  4. Step 4: Simplify right side
    685,659.92x = 294,275,973,993.20
  5. Step 5: Solve for x
    x = 294,275,973,993.20/685,659.92
  6. Step 6: Final answer
    x = 429,186.49

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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.