Home / 685,346.45-1,027,255.03-285,854.45

Finding the Fourth Proportional to 685,346.45, 1,027,255.03 and 285,854.45

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Solution

The fourth proportional to 685,346.45, 1,027,255.03 and 285,854.45 is: 428,462.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,346.45 : 1,027,255.03 = 285,854.45 : x
  2. Step 2: Convert to fraction form
    685,346.45/1,027,255.03 = 285,854.45/x
  3. Step 3: Cross multiply
    685,346.45x = 1,027,255.03 × 285,854.45
  4. Step 4: Simplify right side
    685,346.45x = 293,645,415,759.47
  5. Step 5: Solve for x
    x = 293,645,415,759.47/685,346.45
  6. Step 6: Final answer
    x = 428,462.74

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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.