Home / 808,219.20-1,213,063.20-409,137.60

Finding the Fourth Proportional to 808,219.20, 1,213,063.20 and 409,137.60

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Solution

The fourth proportional to 808,219.20, 1,213,063.20 and 409,137.60 is: 614,078.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,219.20 : 1,213,063.20 = 409,137.60 : x
  2. Step 2: Convert to fraction form
    808,219.20/1,213,063.20 = 409,137.60/x
  3. Step 3: Cross multiply
    808,219.20x = 1,213,063.20 × 409,137.60
  4. Step 4: Simplify right side
    808,219.20x = 496,309,766,296.32
  5. Step 5: Solve for x
    x = 496,309,766,296.32/808,219.20
  6. Step 6: Final answer
    x = 614,078.17

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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.