Home / 686,672.40-1,030,300.20-331,503.60

Finding the Fourth Proportional to 686,672.40, 1,030,300.20 and 331,503.60

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Solution

The fourth proportional to 686,672.40, 1,030,300.20 and 331,503.60 is: 497,396.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,672.40 : 1,030,300.20 = 331,503.60 : x
  2. Step 2: Convert to fraction form
    686,672.40/1,030,300.20 = 331,503.60/x
  3. Step 3: Cross multiply
    686,672.40x = 1,030,300.20 × 331,503.60
  4. Step 4: Simplify right side
    686,672.40x = 341,548,225,380.72
  5. Step 5: Solve for x
    x = 341,548,225,380.72/686,672.40
  6. Step 6: Final answer
    x = 497,396.18

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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.