Home / 693,719.34-1,040,678.22-213,987.66

Finding the Fourth Proportional to 693,719.34, 1,040,678.22 and 213,987.66

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Solution

The fourth proportional to 693,719.34, 1,040,678.22 and 213,987.66 is: 321,012.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,719.34 : 1,040,678.22 = 213,987.66 : x
  2. Step 2: Convert to fraction form
    693,719.34/1,040,678.22 = 213,987.66/x
  3. Step 3: Cross multiply
    693,719.34x = 1,040,678.22 × 213,987.66
  4. Step 4: Simplify right side
    693,719.34x = 222,692,297,110.77
  5. Step 5: Solve for x
    x = 222,692,297,110.77/693,719.34
  6. Step 6: Final answer
    x = 321,012.09

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1.5x scale

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.