Home / 645,808.09-968,919.71-196,615.92

Finding the Fourth Proportional to 645,808.09, 968,919.71 and 196,615.92

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Solution

The fourth proportional to 645,808.09, 968,919.71 and 196,615.92 is: 294,987.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,808.09 : 968,919.71 = 196,615.92 : x
  2. Step 2: Convert to fraction form
    645,808.09/968,919.71 = 196,615.92/x
  3. Step 3: Cross multiply
    645,808.09x = 968,919.71 × 196,615.92
  4. Step 4: Simplify right side
    645,808.09x = 190,505,040,187.78
  5. Step 5: Solve for x
    x = 190,505,040,187.78/645,808.09
  6. Step 6: Final answer
    x = 294,987.08

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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.