Home / 685,778.80-1,028,832.44-286,197.30

Finding the Fourth Proportional to 685,778.80, 1,028,832.44 and 286,197.30

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Solution

The fourth proportional to 685,778.80, 1,028,832.44 and 286,197.30 is: 429,364.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,778.80 : 1,028,832.44 = 286,197.30 : x
  2. Step 2: Convert to fraction form
    685,778.80/1,028,832.44 = 286,197.30/x
  3. Step 3: Cross multiply
    685,778.80x = 1,028,832.44 × 286,197.30
  4. Step 4: Simplify right side
    685,778.80x = 294,449,066,480.41
  5. Step 5: Solve for x
    x = 294,449,066,480.41/685,778.80
  6. Step 6: Final answer
    x = 429,364.49

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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.