Home / 686,719.40-1,030,235.70-213,452.60

Finding the Fourth Proportional to 686,719.40, 1,030,235.70 and 213,452.60

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Solution

The fourth proportional to 686,719.40, 1,030,235.70 and 213,452.60 is: 320,227.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,719.40 : 1,030,235.70 = 213,452.60 : x
  2. Step 2: Convert to fraction form
    686,719.40/1,030,235.70 = 213,452.60/x
  3. Step 3: Cross multiply
    686,719.40x = 1,030,235.70 × 213,452.60
  4. Step 4: Simplify right side
    686,719.40x = 219,906,488,777.82
  5. Step 5: Solve for x
    x = 219,906,488,777.82/686,719.40
  6. Step 6: Final answer
    x = 320,227.58

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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.