Home / 820,134.88-1,131,786.83-457,558.81

Finding the Fourth Proportional to 820,134.88, 1,131,786.83 and 457,558.81

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Solution

The fourth proportional to 820,134.88, 1,131,786.83 and 457,558.81 is: 631,431.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,134.88 : 1,131,786.83 = 457,558.81 : x
  2. Step 2: Convert to fraction form
    820,134.88/1,131,786.83 = 457,558.81/x
  3. Step 3: Cross multiply
    820,134.88x = 1,131,786.83 × 457,558.81
  4. Step 4: Simplify right side
    820,134.88x = 517,859,033,422.90
  5. Step 5: Solve for x
    x = 517,859,033,422.90/820,134.88
  6. Step 6: Final answer
    x = 631,431.55

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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.