Home / 561,429.05-774,788.13-313,076.75

Finding the Fourth Proportional to 561,429.05, 774,788.13 and 313,076.75

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Solution

The fourth proportional to 561,429.05, 774,788.13 and 313,076.75 is: 432,054.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,429.05 : 774,788.13 = 313,076.75 : x
  2. Step 2: Convert to fraction form
    561,429.05/774,788.13 = 313,076.75/x
  3. Step 3: Cross multiply
    561,429.05x = 774,788.13 × 313,076.75
  4. Step 4: Simplify right side
    561,429.05x = 242,568,145,805.04
  5. Step 5: Solve for x
    x = 242,568,145,805.04/561,429.05
  6. Step 6: Final answer
    x = 432,054.86

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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.