Home / 1,091,145.60-1,640,217.60-777,772.80

Finding the Fourth Proportional to 1,091,145.60, 1,640,217.60 and 777,772.80

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Solution

The fourth proportional to 1,091,145.60, 1,640,217.60 and 777,772.80 is: 1,169,153.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,091,145.60 : 1,640,217.60 = 777,772.80 : x
  2. Step 2: Convert to fraction form
    1,091,145.60/1,640,217.60 = 777,772.80/x
  3. Step 3: Cross multiply
    1,091,145.60x = 1,640,217.60 × 777,772.80
  4. Step 4: Simplify right side
    1,091,145.60x = 1,275,716,635,361.28
  5. Step 5: Solve for x
    x = 1,275,716,635,361.28/1,091,145.60
  6. Step 6: Final answer
    x = 1,169,153.44

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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.