Home / 669,783.60-1,004,659.20-403,342.20

Finding the Fourth Proportional to 669,783.60, 1,004,659.20 and 403,342.20

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Solution

The fourth proportional to 669,783.60, 1,004,659.20 and 403,342.20 is: 605,003.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,783.60 : 1,004,659.20 = 403,342.20 : x
  2. Step 2: Convert to fraction form
    669,783.60/1,004,659.20 = 403,342.20/x
  3. Step 3: Cross multiply
    669,783.60x = 1,004,659.20 × 403,342.20
  4. Step 4: Simplify right side
    669,783.60x = 405,221,451,978.24
  5. Step 5: Solve for x
    x = 405,221,451,978.24/669,783.60
  6. Step 6: Final answer
    x = 605,003.54

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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.