Home / 1,189,888.77-1,785,542.34-431,789.39

Finding the Fourth Proportional to 1,189,888.77, 1,785,542.34 and 431,789.39

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Solution

The fourth proportional to 1,189,888.77, 1,785,542.34 and 431,789.39 is: 647,941.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,888.77 : 1,785,542.34 = 431,789.39 : x
  2. Step 2: Convert to fraction form
    1,189,888.77/1,785,542.34 = 431,789.39/x
  3. Step 3: Cross multiply
    1,189,888.77x = 1,785,542.34 × 431,789.39
  4. Step 4: Simplify right side
    1,189,888.77x = 770,978,228,880.06
  5. Step 5: Solve for x
    x = 770,978,228,880.06/1,189,888.77
  6. Step 6: Final answer
    x = 647,941.43

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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.