Home / 685,106.88-945,448.32-383,301.12

Finding the Fourth Proportional to 685,106.88, 945,448.32 and 383,301.12

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Solution

The fourth proportional to 685,106.88, 945,448.32 and 383,301.12 is: 528,956.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,106.88 : 945,448.32 = 383,301.12 : x
  2. Step 2: Convert to fraction form
    685,106.88/945,448.32 = 383,301.12/x
  3. Step 3: Cross multiply
    685,106.88x = 945,448.32 × 383,301.12
  4. Step 4: Simplify right side
    685,106.88x = 362,391,399,958.12
  5. Step 5: Solve for x
    x = 362,391,399,958.12/685,106.88
  6. Step 6: Final answer
    x = 528,956.01

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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.