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Finding the Fourth Proportional to 893,684.40, 1,340,105.40 and 324,664.20

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Solution

The fourth proportional to 893,684.40, 1,340,105.40 and 324,664.20 is: 486,843.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    893,684.40 : 1,340,105.40 = 324,664.20 : x
  2. Step 2: Convert to fraction form
    893,684.40/1,340,105.40 = 324,664.20/x
  3. Step 3: Cross multiply
    893,684.40x = 1,340,105.40 × 324,664.20
  4. Step 4: Simplify right side
    893,684.40x = 435,084,247,606.68
  5. Step 5: Solve for x
    x = 435,084,247,606.68/893,684.40
  6. Step 6: Final answer
    x = 486,843.28

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Double scale
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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.