Home / 866,027.60-1,299,041.40-393,635.60

Finding the Fourth Proportional to 866,027.60, 1,299,041.40 and 393,635.60

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Solution

The fourth proportional to 866,027.60, 1,299,041.40 and 393,635.60 is: 590,453.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,027.60 : 1,299,041.40 = 393,635.60 : x
  2. Step 2: Convert to fraction form
    866,027.60/1,299,041.40 = 393,635.60/x
  3. Step 3: Cross multiply
    866,027.60x = 1,299,041.40 × 393,635.60
  4. Step 4: Simplify right side
    866,027.60x = 511,348,940,913.84
  5. Step 5: Solve for x
    x = 511,348,940,913.84/866,027.60
  6. Step 6: Final answer
    x = 590,453.40

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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.