Home / 808,512.60-1,211,748.30-409,263.60

Finding the Fourth Proportional to 808,512.60, 1,211,748.30 and 409,263.60

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Solution

The fourth proportional to 808,512.60, 1,211,748.30 and 409,263.60 is: 613,378.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,512.60 : 1,211,748.30 = 409,263.60 : x
  2. Step 2: Convert to fraction form
    808,512.60/1,211,748.30 = 409,263.60/x
  3. Step 3: Cross multiply
    808,512.60x = 1,211,748.30 × 409,263.60
  4. Step 4: Simplify right side
    808,512.60x = 495,924,471,551.88
  5. Step 5: Solve for x
    x = 495,924,471,551.88/808,512.60
  6. Step 6: Final answer
    x = 613,378.78

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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.