Home / 686,530.40-1,030,087.20-331,361.60

Finding the Fourth Proportional to 686,530.40, 1,030,087.20 and 331,361.60

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Solution

The fourth proportional to 686,530.40, 1,030,087.20 and 331,361.60 is: 497,183.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,530.40 : 1,030,087.20 = 331,361.60 : x
  2. Step 2: Convert to fraction form
    686,530.40/1,030,087.20 = 331,361.60/x
  3. Step 3: Cross multiply
    686,530.40x = 1,030,087.20 × 331,361.60
  4. Step 4: Simplify right side
    686,530.40x = 341,331,342,731.52
  5. Step 5: Solve for x
    x = 341,331,342,731.52/686,530.40
  6. Step 6: Final answer
    x = 497,183.14

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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.