Home / 427,618.50-641,427.74-196,784.18

Finding the Fourth Proportional to 427,618.50, 641,427.74 and 196,784.18

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Solution

The fourth proportional to 427,618.50, 641,427.74 and 196,784.18 is: 295,176.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,618.50 : 641,427.74 = 196,784.18 : x
  2. Step 2: Convert to fraction form
    427,618.50/641,427.74 = 196,784.18/x
  3. Step 3: Cross multiply
    427,618.50x = 641,427.74 × 196,784.18
  4. Step 4: Simplify right side
    427,618.50x = 126,222,831,822.45
  5. Step 5: Solve for x
    x = 126,222,831,822.45/427,618.50
  6. Step 6: Final answer
    x = 295,176.27

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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.