Home / 403,679.07-605,308.38-190,389.72

Finding the Fourth Proportional to 403,679.07, 605,308.38 and 190,389.72

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Solution

The fourth proportional to 403,679.07, 605,308.38 and 190,389.72 is: 285,485.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,679.07 : 605,308.38 = 190,389.72 : x
  2. Step 2: Convert to fraction form
    403,679.07/605,308.38 = 190,389.72/x
  3. Step 3: Cross multiply
    403,679.07x = 605,308.38 × 190,389.72
  4. Step 4: Simplify right side
    403,679.07x = 115,244,492,981.85
  5. Step 5: Solve for x
    x = 115,244,492,981.85/403,679.07
  6. Step 6: Final answer
    x = 285,485.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.