Home / 725,015.21-1,000,359.92-438,529.14

Finding the Fourth Proportional to 725,015.21, 1,000,359.92 and 438,529.14

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Solution

The fourth proportional to 725,015.21, 1,000,359.92 and 438,529.14 is: 605,072.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,015.21 : 1,000,359.92 = 438,529.14 : x
  2. Step 2: Convert to fraction form
    725,015.21/1,000,359.92 = 438,529.14/x
  3. Step 3: Cross multiply
    725,015.21x = 1,000,359.92 × 438,529.14
  4. Step 4: Simplify right side
    725,015.21x = 438,686,976,504.39
  5. Step 5: Solve for x
    x = 438,686,976,504.39/725,015.21
  6. Step 6: Final answer
    x = 605,072.79

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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.