Home / 686,729.40-1,030,250.70-213,462.60

Finding the Fourth Proportional to 686,729.40, 1,030,250.70 and 213,462.60

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Solution

The fourth proportional to 686,729.40, 1,030,250.70 and 213,462.60 is: 320,242.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,729.40 : 1,030,250.70 = 213,462.60 : x
  2. Step 2: Convert to fraction form
    686,729.40/1,030,250.70 = 213,462.60/x
  3. Step 3: Cross multiply
    686,729.40x = 1,030,250.70 × 213,462.60
  4. Step 4: Simplify right side
    686,729.40x = 219,919,993,073.82
  5. Step 5: Solve for x
    x = 219,919,993,073.82/686,729.40
  6. Step 6: Final answer
    x = 320,242.58

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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.