Home / 645,945.40-968,918.10-196,662.70

Finding the Fourth Proportional to 645,945.40, 968,918.10 and 196,662.70

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Solution

The fourth proportional to 645,945.40, 968,918.10 and 196,662.70 is: 294,994.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,945.40 : 968,918.10 = 196,662.70 : x
  2. Step 2: Convert to fraction form
    645,945.40/968,918.10 = 196,662.70/x
  3. Step 3: Cross multiply
    645,945.40x = 968,918.10 × 196,662.70
  4. Step 4: Simplify right side
    645,945.40x = 190,550,049,624.87
  5. Step 5: Solve for x
    x = 190,550,049,624.87/645,945.40
  6. Step 6: Final answer
    x = 294,994.05

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Double scale
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Similar ratio
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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.