Home / 811,777.38-1,120,029.39-505,903.38

Finding the Fourth Proportional to 811,777.38, 1,120,029.39 and 505,903.38

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Solution

The fourth proportional to 811,777.38, 1,120,029.39 and 505,903.38 is: 698,007.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,777.38 : 1,120,029.39 = 505,903.38 : x
  2. Step 2: Convert to fraction form
    811,777.38/1,120,029.39 = 505,903.38/x
  3. Step 3: Cross multiply
    811,777.38x = 1,120,029.39 × 505,903.38
  4. Step 4: Simplify right side
    811,777.38x = 566,626,654,100.34
  5. Step 5: Solve for x
    x = 566,626,654,100.34/811,777.38
  6. Step 6: Final answer
    x = 698,007.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.