Home / 641,724.36-886,179.69-412,679.40

Finding the Fourth Proportional to 641,724.36, 886,179.69 and 412,679.40

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Solution

The fourth proportional to 641,724.36, 886,179.69 and 412,679.40 is: 569,883.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,724.36 : 886,179.69 = 412,679.40 : x
  2. Step 2: Convert to fraction form
    641,724.36/886,179.69 = 412,679.40/x
  3. Step 3: Cross multiply
    641,724.36x = 886,179.69 × 412,679.40
  4. Step 4: Simplify right side
    641,724.36x = 365,708,102,761.39
  5. Step 5: Solve for x
    x = 365,708,102,761.39/641,724.36
  6. Step 6: Final answer
    x = 569,883.47

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.