Home / 808,536.60-1,211,784.30-409,287.60

Finding the Fourth Proportional to 808,536.60, 1,211,784.30 and 409,287.60

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Solution

The fourth proportional to 808,536.60, 1,211,784.30 and 409,287.60 is: 613,414.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,536.60 : 1,211,784.30 = 409,287.60 : x
  2. Step 2: Convert to fraction form
    808,536.60/1,211,784.30 = 409,287.60/x
  3. Step 3: Cross multiply
    808,536.60x = 1,211,784.30 × 409,287.60
  4. Step 4: Simplify right side
    808,536.60x = 495,968,287,864.68
  5. Step 5: Solve for x
    x = 495,968,287,864.68/808,536.60
  6. Step 6: Final answer
    x = 613,414.76

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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.