Home / 767,940.20-1,059,757.92-428,408.45

Finding the Fourth Proportional to 767,940.20, 1,059,757.92 and 428,408.45

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Solution

The fourth proportional to 767,940.20, 1,059,757.92 and 428,408.45 is: 591,203.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    767,940.20 : 1,059,757.92 = 428,408.45 : x
  2. Step 2: Convert to fraction form
    767,940.20/1,059,757.92 = 428,408.45/x
  3. Step 3: Cross multiply
    767,940.20x = 1,059,757.92 × 428,408.45
  4. Step 4: Simplify right side
    767,940.20x = 454,009,247,882.42
  5. Step 5: Solve for x
    x = 454,009,247,882.42/767,940.20
  6. Step 6: Final answer
    x = 591,203.91

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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.