Home / 809,231.60-1,212,486.60-640,103.60

Finding the Fourth Proportional to 809,231.60, 1,212,486.60 and 640,103.60

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Solution

The fourth proportional to 809,231.60, 1,212,486.60 and 640,103.60 is: 959,079.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,231.60 : 1,212,486.60 = 640,103.60 : x
  2. Step 2: Convert to fraction form
    809,231.60/1,212,486.60 = 640,103.60/x
  3. Step 3: Cross multiply
    809,231.60x = 1,212,486.60 × 640,103.60
  4. Step 4: Simplify right side
    809,231.60x = 776,117,037,611.76
  5. Step 5: Solve for x
    x = 776,117,037,611.76/809,231.60
  6. Step 6: Final answer
    x = 959,079.00

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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.