Home / 1,091,153.60-1,640,229.60-777,780.80

Finding the Fourth Proportional to 1,091,153.60, 1,640,229.60 and 777,780.80

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Solution

The fourth proportional to 1,091,153.60, 1,640,229.60 and 777,780.80 is: 1,169,165.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,091,153.60 : 1,640,229.60 = 777,780.80 : x
  2. Step 2: Convert to fraction form
    1,091,153.60/1,640,229.60 = 777,780.80/x
  3. Step 3: Cross multiply
    1,091,153.60x = 1,640,229.60 × 777,780.80
  4. Step 4: Simplify right side
    1,091,153.60x = 1,275,739,090,471.68
  5. Step 5: Solve for x
    x = 1,275,739,090,471.68/1,091,153.60
  6. Step 6: Final answer
    x = 1,169,165.45

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Double scale
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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.