Home / 1,112,405.05-1,668,610.31-313,690.78

Finding the Fourth Proportional to 1,112,405.05, 1,668,610.31 and 313,690.78

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Solution

The fourth proportional to 1,112,405.05, 1,668,610.31 and 313,690.78 is: 470,536.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,112,405.05 : 1,668,610.31 = 313,690.78 : x
  2. Step 2: Convert to fraction form
    1,112,405.05/1,668,610.31 = 313,690.78/x
  3. Step 3: Cross multiply
    1,112,405.05x = 1,668,610.31 × 313,690.78
  4. Step 4: Simplify right side
    1,112,405.05x = 523,427,670,177.25
  5. Step 5: Solve for x
    x = 523,427,670,177.25/1,112,405.05
  6. Step 6: Final answer
    x = 470,536.94

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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.