Home / 686,860.80-1,029,999.60-331,983.60

Finding the Fourth Proportional to 686,860.80, 1,029,999.60 and 331,983.60

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Solution

The fourth proportional to 686,860.80, 1,029,999.60 and 331,983.60 is: 497,834.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,860.80 : 1,029,999.60 = 331,983.60 : x
  2. Step 2: Convert to fraction form
    686,860.80/1,029,999.60 = 331,983.60/x
  3. Step 3: Cross multiply
    686,860.80x = 1,029,999.60 × 331,983.60
  4. Step 4: Simplify right side
    686,860.80x = 341,942,975,206.56
  5. Step 5: Solve for x
    x = 341,942,975,206.56/686,860.80
  6. Step 6: Final answer
    x = 497,834.46

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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.