Home / 403,979.40-605,580.30-313,972.20

Finding the Fourth Proportional to 403,979.40, 605,580.30 and 313,972.20

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Solution

The fourth proportional to 403,979.40, 605,580.30 and 313,972.20 is: 470,656.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,979.40 : 605,580.30 = 313,972.20 : x
  2. Step 2: Convert to fraction form
    403,979.40/605,580.30 = 313,972.20/x
  3. Step 3: Cross multiply
    403,979.40x = 605,580.30 × 313,972.20
  4. Step 4: Simplify right side
    403,979.40x = 190,135,379,067.66
  5. Step 5: Solve for x
    x = 190,135,379,067.66/403,979.40
  6. Step 6: Final answer
    x = 470,656.13

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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.