Home / 790,725.54-1,091,201.90-428,149.60

Finding the Fourth Proportional to 790,725.54, 1,091,201.90 and 428,149.60

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Solution

The fourth proportional to 790,725.54, 1,091,201.90 and 428,149.60 is: 590,846.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    790,725.54 : 1,091,201.90 = 428,149.60 : x
  2. Step 2: Convert to fraction form
    790,725.54/1,091,201.90 = 428,149.60/x
  3. Step 3: Cross multiply
    790,725.54x = 1,091,201.90 × 428,149.60
  4. Step 4: Simplify right side
    790,725.54x = 467,197,652,135.49
  5. Step 5: Solve for x
    x = 467,197,652,135.49/790,725.54
  6. Step 6: Final answer
    x = 590,846.79

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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.